Freedom251 › Digital Sheet Music Platforms

Musopen

Name: Musopen
Author: Musopen

Free plan AndroidiPhoneMacWeb

What Musopen is

Musopen is a music and learning service offering recordings, sheet music, textbooks, and tools for teaching and practice. Its catalog can be explored by composer, performer, instrument, tag, musical form, or time period. Musopen says the music it hosts is royalty and copyright free, and recommends checking an item’s license icon for any restrictions. The sheet music collection includes over 100,000 classical PDF files that are free and in the public domain.

For teachers, Adagio is a web app for organizing students, lessons and performances, homework, and billing. It supports online credit card payments, reminders, payment tracking, and automated cancellation policies. The Practice app records practice frequency and duration, offers goals and badges, and shows progress over time; it also connects users to the music library, with browsing by composer, difficulty, or popularity. Musopen Radio provides free HD classical streaming on the web or through its app. Moonlight is a free, open-source music player for macOS that requires no account and has no telemetry or nag screens. Musopen was founded in 2012 and is based in San Francisco, California.

Who it suits

Musopen suits people looking for classical recordings, public-domain sheet music, and music education materials, as well as teachers who need tools for lessons and billing. Its Practice app may also suit learners who want to track practice and progress.

What it does well

Browse music by composer, performer, instrument, tag, form, or period.
Access over 100,000 free public-domain classical sheet music PDFs.
Adagio manages students, lessons, homework, and billing.
Practice tracks frequency, duration, goals, badges, and progress.
Moonlight is free and open source for macOS.

What to know first

Lite limits downloads to five music downloads per day.
Platforms listed for the service are macOS and web.

Limits

Lite allows five music downloads per day. Member includes unlimited downloads and students; no price is stated for either plan.

Plans

Plan	Billed and limits	Price
Lite	5 music downloads per day · lossless audio · early access to music · unlimited Studio students · student-session audio · automated invoicing	Free
Member	$55 /year · unlimited downloads · lossless audio · early access to music · unlimited Studio students · student-session audio · automated invoicing	$55 a year

As musopen.org lists them, read 15 Oct 2026. The maker's own page has the final word.

Getting started

Visit https://musopen.org/.
Use the web platform to browse the music library or access web tools.
Choose Lite for five music downloads per day, or Member for unlimited downloads and students.
For macOS, use the Moonlight music player.

Verdict

Choose Musopen for free music education resources, classical sheet music, and connected tools for teaching or practice. Teachers may find Adagio useful for managing lessons and payments.

Questions

Is Musopen free?

Musopen has a free plan. Musopen Radio also offers free HD classical streaming.

What are the Lite and Member plan limits?

Lite allows five music downloads per day. Member includes unlimited downloads and students.

What platforms does Musopen support?

The listed platforms are macOS and web. Musopen Radio is available on the web or through its app.

Is Musopen’s music free of copyright restrictions?

Musopen says its hosted music is royalty and copyright free, and advises checking license icons for applicable restrictions.

Does Musopen have an open-source app?

Moonlight is described as a free, open-source music player for macOS.

Who makes Musopen?

The maker is Musopen, founded in 2012 and headquartered in San Francisco, California, United States.

Facts from Musopen's own pages

Adagio: Adagio is a web studio-management app with student records, lesson and performance scheduling, homework assignment and billing. · musopen.org, 15 Oct 2026
Adagio payments: Adagio supports online credit card payments, billing reminders, payment tracking, and automated cancellation policies. · musopen.org, 9 Oct 2026
Android availability: Practice by Musopen is rated Everyone, has 10K+ downloads and was updated October 1, 2026 on Google Play. · play.google.com, 15 Oct 2026
API and SDKs: The official pages reviewed provide no public API reference, SDK package or developer integration documentation. · musopen.org, 15 Oct 2026
Audience: Musopen says its mission is to increase access to music education with free recordings, sheet music, apps, and educational materials. · musopen.org, 9 Oct 2026
Commercial reuse: The FAQ says genuinely public-domain works may be used commercially, while warning users to verify each work's status. · musopen.org, 15 Oct 2026
Company type: Musopen identifies itself as a 501(c)(3) nonprofit based in San Francisco, California. · musopen.org, 15 Oct 2026
Copyright guidance: Musopen explains that public-domain status differs by country and that a composition and its recording can have separate copyrights. · musopen.org, 15 Oct 2026
Data safety: Google Play reports no third-party data sharing, possible collection of personal information, app activity and performance data, encryption in transit and deletion requests. · play.google.com, 15 Oct 2026
Developer address: Google Play lists the developer address as 5227 Shirley Ave, Tarzana, California, United States. · play.google.com, 15 Oct 2026
Documentation depth: Official support material consists mainly of FAQ, terms, privacy and feature pages; no versioned technical documentation or changelog is linked from the main site. · musopen.org, 15 Oct 2026
Educational resources: Musopen offers music-education resources for teachers and students. · musopen.org, 15 Oct 2026
Founded: The official homepage states that Musopen was founded in 2012. · musopen.org, 15 Oct 2026
Free plan: Yes · musopen.org, 22 Sept 2026
Funding criticism: The 2010 Ars Technica report said Musopen funding had been sporadic and that some musicians feared freely released recordings could harm orchestral licensing revenue. · arstechnica.com, 15 Oct 2026
Funding news: Ars Technica reported on September 13, 2010 that Musopen's Kickstarter had exceeded $41,000 toward an $11,000 orchestral-recording goal. · arstechnica.com, 15 Oct 2026
Headquarters: San Francisco, California, United States · musopen.org, 28 Sept 2026
iOS requirements: The App Store lists Practice as iPhone-only, free, 60.7 MB and age-rated 4+. · apps.apple.com, 15 Oct 2026
Limit: connectivity: Reviewers repeatedly complain that Practice requires internet access for sessions and statistics, limiting offline use. · chrome-stats.com, 15 Oct 2026
Limit: goals: An App Store reviewer reported that entering a 120-minute goal caused the app to mark it complete after two minutes. · apps.apple.com, 15 Oct 2026
Limit: reliability: Reviewers report update-related breakage, missing feeds, recordings that fail to play, spinning screens and slow responses from the developer. · chrome-stats.com, 15 Oct 2026
Limit: timer and history: Reviewers report timers stopping when the app is minimized or locked and annual progress resets that lose lifetime totals. · chrome-stats.com, 15 Oct 2026
macOS player: Moonlight is described as a free, open-source music player for macOS with no account, telemetry, or nag screens. · musopen.org, 9 Oct 2026
Mission: Musopen provides recordings, sheet music, and textbooks to the public for free, without copyright restrictions. · musopen.org, 9 Oct 2026