What metronaut does

Antescofo SAS, operating commercially as Metronaut, is a Paris-based private company (founded July 2016) that builds an AI-powered music practice application combining interactive sheet music with real-time adaptive accompaniments. The product is built on "Intelligent Machine Listening" technology developed through more than seven years of R&D at IRCAM (Institut de Recherche et Coordination Acoustique/Musique), the world's largest music and technology research laboratory. The patented audio recognition engine listens to a musician play through the device microphone and synchronizes auto-scrolling sheet music and accompaniment tracks to the user's actual tempo and dynamics. The catalog spans more than 15,000 sheet music pieces across 20+ instruments (violin, piano, flute, guitar, voice, clarinet, trumpet, saxophone, cello, and others), covering classical repertoire, educational pieces, popular arrangements, and movie, pop, jazz, and R&B content.

The product is distributed as a cross-platform freemium app on iOS, Android, macOS, and web with a single subscription covering all access points. Revenue is generated through three streams: (1) recurring Premium subscriptions billed weekly, monthly, or annually; (2) a one-time lifetime access purchase; and (3) institutional licensing for music teachers, schools, and conservatories with commercial use rights. Go-to-market combines product-led growth (free trial, app store distribution) with a channel-partner motion (commission-based ambassador program recruiting teachers and institutions) and direct inside sales for B2B contracts. Target customers include individual music students, private music teachers, music schools and conservatories (École Normale de Musique de Paris and Conservatoire Camille Saint-Saëns are named adopters), and parents funding children's music education. The company has raised approximately $4.5 million in seed funding (February 2019), with backing from Facebook's Chief AI Scientist Yann LeCun, and operates with a small, interdisciplinary team of roughly 20 people across engineering, AI, design, musicianship, and business development.

Name

metronaut

Legal name

Antescofo SAS

Website

https://metronautapp.com

Company type

Private

Founded year

2016

Operating status

Operating

Short description

Metronaut, operated by Paris-based Antescofo SAS, is a freemium music practice app offering AI-powered interactive sheet music and real-time adaptive accompaniments for 20+ instruments. It serves music students, teachers, schools, and conservatories, with core technology originating from 7+ years of IRCAM R&D.

Ownership category

akta.pro rank

Product category

Music Education Software

NAICS

Educational Support Services (61171), Other Sound Recording Industries (51229)

akta.pro primary industry

Music Education & Practice Software (Ear training, tutors, metronome tools) (MPAIAIAJ)

akta.pro secondary industries

AI Music Creation & Assistive Tools (Generation, Separation, Mastering) (MPAIAIAG), Music Recognition, Lyrics & Metadata Platforms (MPAIADAK), Music Theory, Ear Training & Musicianship (EDAMANAF)

Keywords

• Interactive sheet music
• Music practice app
• Digital music education
• AI music accompaniment
• Intelligent machine listening

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Software

Cost components

Technology or R&D, Personnel, Marketing or Sales, Operations

Revenue model

1. Premium Subscription: Recurring subscription providing unlimited access to full sheet music catalog and premium features across all devices (iOS, Android, macOS, web). Subscription auto-renews weekly, monthly, or annually.
2. Lifetime Access: One-time purchase option granting permanent access to paid features. Personal and linked to account, cannot be assigned or transferred.
3. Teacher/Institution Licensing: Special licensing for teachers and music institutions for teaching activities (commercial use exception in Terms of Service).

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels6 records

Core offering

Metronaut provides an interactive sheet music application with AI-powered real-time accompaniments for musicians and music students. The app features 15,000+ digitized scores across 20+ instruments and uses proprietary "Intelligent Machine Listening" technology to recognize live performance and synchronize accompaniments to the user's tempo. The service is delivered as a cross-platform app (iOS, Android, macOS, web) via subscription, with separate institutional licensing for music schools and conservatories.

Product overview

Metronaut is a single, unified music practice app that combines interactive sheet music with AI-powered adaptive accompaniments. The core product is the Metronaut App, which offers over 15,000 pieces of sheet music with professional accompaniments for 20+ instruments. The app listens to musicians in real-time and synchronizes content to match their tempo. The offering includes a Premium subscription tier for full access, a Teacher & School Program for institutional licensing, an Ambassador Program for referral-based distribution, and the Metronaut Community for social features. Users can access content across iOS, Android, macOS, and web platforms with a single subscription.

Differentiator

Problem solved

Functional benefit

Products and services

• Metronaut App Interactive sheet music and AI-powered adaptive accompaniment application that listens to musicians in real-time and synchronizes content to match their playing tempo. Provides 15,000+ sheet music pieces with professional accompaniments for 20+ instruments, accessible on iOS, Android, macOS, and web for individual musicians, students, and teachers.
• Metronaut Premium Subscription Paid subscription providing unlimited access to the full sheet music catalog and premium features (tempo adjustment, transposition, printing) across all supported devices under a single account. Available on weekly, monthly, or annual auto-renewing billing cadences.
• Metronaut Teacher & School Program Institutional licensing offering for music schools, conservatories, and private teachers, providing commercial-use licensing for teaching activities, curriculum integration, and student progress monitoring tools.
• Lifetime Access One-time purchase option granting permanent access to paid Metronaut features. Tied to a personal account and non-transferable, providing an alternative to recurring subscription billing for individual users.

Quantifiable outcome

• 15,000+ sheet music pieces available
• +4 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability2 records

Feature4 records

Partnerships

Eleven partnerships are on record, tiered core and minor.

• AlgamcoreGTM or Marketing PartnerAlgam is listed as a trusted brand that Metronaut works closely with, appearing in the partner logos section alongside other music industry partners.
• WoodbrasscoreGTM or Marketing PartnerWoodbrass is listed as a trusted brand Metronaut works closely with, appearing in the partner logos section as a music industry partner.
• Buffet-CramponcoreGTM or Marketing PartnerBuffet-Crampon, a leading manufacturer of woodwind instruments, is listed as a trusted partner brand Metronaut works closely with.
• IRCAM (Institut de Recherche et Coordination Acoustique/Musique)coreTechnology or IntegrationIRCAM is the world's largest laboratory dedicated to Music and Technology in Paris. Antescofo's technology originates from 7+ years of R&D at IRCAM. Metronaut displays the IRCAM logo in its partners section.
• SACEMcoreStrategic or Co-development PartnerSACEM (Société des Auteurs et Compositeurs Dramatiques) is a French collective society for music creators. Listed as a partner with logo displayed on the website.
• PleyelcoreGTM or Marketing PartnerPleyel, the historic French piano manufacturer founded by Ignace Pleyel, is listed as a partner. Chopin connections mentioned in blog content about Pleyel pianos.
• Radio FranceminorGTM or Marketing PartnerRadio France, the French public radio broadcaster, is listed as a partner with logo displayed on the website.
• École Normale de Musique de PariscoreStrategic or Co-development PartnerPrestigious music conservatory in Paris that has adopted Metronaut for their students. Listed as an institution using the app.
• Conservatoire Camille Saint-Saëns (Paris 8th)coreStrategic or Co-development PartnerParis conservatory that has adopted Metronaut for their students. Listed among institutions using the app.
• Station FcoreStrategic or Co-development PartnerStation F is the world's largest startup campus in Paris. Antescofo is described as a graduate of Station F startup ecosystem.
• AgoranovcoreStrategic or Co-development PartnerAgoranov is a French startup accelerator in Paris. Antescofo is described as a graduate of two of the best startup ecosystems in Paris (Agoranov and Station F).

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Newzik: Digital sheet music reader and library app with cross-device syncing and practice tools. Comparable on interactive sheet music and multi-device subscription, though less focused on real-time AI accompaniment.
• Flat (Flat.io): Collaborative music notation platform with interactive scores and education tools. Overlaps Metronaut on interactive sheet music and education market, with stronger composition/collab functionality.
• Musicnotes: Largest digital sheet music retailer with subscription and per-piece purchasing for individual musicians and educators. Comparable on sheet music catalog breadth and teacher/institution purchasing.
• Playground Sessions: Interactive piano learning app with real-time feedback, popular song repertoire, and subscription tiers. Comparable on AI-driven accompaniment and subscription GTM, narrower in instrument coverage.
• Yousician: AI-driven music learning app offering interactive lessons and real-time feedback for guitar, piano, ukulele, and bass. Closely comparable to Metronaut on subscription model, real-time listening, and consumer music practice positioning.
• Tonara: Interactive sheet music app with auto-scrolling and performance tracking for music teachers and students. Directly comparable to Metronaut's interactive sheet music and Teacher & School program positioning.
• Simply Piano (by JoyTunes): Piano learning app with real-time listening and adaptive accompaniment, freemium subscription, and broad consumer reach. Overlaps Metronaut on real-time AI accompaniment and cross-platform subscription, though focused on piano rather than 20+ instruments.
• Flowkey: Interactive piano learning app with real-time feedback, sheet music library, and subscription model. Comparable to Metronaut on interactive score, real-time listening, and consumer subscription GTM, narrower in instrument coverage.

Broad incumbents

• SmartMusic: Established music education software for schools with interactive scores, assessment, and accompaniment. Comparable to Metronaut's institutional/teacher channel and classical repertoire focus, with deeper school-distribution heritage.
• IMSLP / Petrucci Music Library: Free public-domain sheet music library widely used by classical musicians and educators. Overlaps Metronaut on classical sheet music discovery and educational usage, though not a subscription or accompaniment product.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/Metronaut_App
• YouTubeyoutube.com/channel/UC8wdgBaanz4A96zWPmogKFg
• Facebookfacebook.com/Metronautapp
• LinkedInlinkedin.com/company/antescofo
• Instagraminstagram.com/metronautapp

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about metronaut