Muse Group

A team of creatives, music lovers and audio obsessives, developing products loved by over 400M users worldwide

2026

Ultimate Guitar has over 2M tabs, MuseScore features over 3M scores, and Audacity has over 100M downloads. 

2 000 000tabs

2025

Artists Unanimous is launched. Bringing creatives together and starting a community of memory keepers.

2024

With the release of Audacity 3.5, cloud-saving capabilities are now availableon both Audacity and Audio.com. Creating a fundamental shift in how users manage their projects.

2023

Muse Group acquires the legendary sheet music publisher Hal Leonard, bringing an unparalleled catalog of music content and educational expertise to the team.

2022

MuseHub launches to offer high-quality creative applications, plugins, and sample libraries. MuseSounds is also launched, offering a diverse library of plugins that provide realistic playback for MuseScore Studio.

2022

Audio.com, a powerful audio hosting platform is launched. It features a library spanning music, podcasts and more.

2020

The team acquires Audacity, the world’s most popular free audio editing software.

2017

Ultimate Guitar acquires MuseScore's sheet music catalog and composition software, expanding into other areas of music making.

2017

Ultimate Guitar launches Official Tabs. Professional guitarists create new high-quality tabs with studio-quality backing tracks, synced lyrics, and access to Tonebridge guitar effects.

2014

MuseScore launches apps for iOS and Android, allowing users to access scores on the go.

2010

Over 1 million tabs are now available. Eugeny’s hero,

Slash

(Guns ‘N’ Roses), partners with the team for a two-year campaign.

1 000 000tabs

2010

A licensing agreement with Harry Fox Agency is reached, including rights for lyrics display, title search, and tab display with download and print capabilities.

2005

Ultimate Guitar signs its first official agreement with publishers. Beginning a relationship of mutual support between music sites and artist publishing.

Elvis Presley
Cant Help Falling In Love With You
[ 14850 ]Chords
Justin Bieber
Love Yourself
[ 12804 ]Chords
Ed Sheeran
Photograph
[ 7875 ]Chords
Lukas Graham
7 Years
[ 7572 ]Chords
Charlie Puth
One Call Away
[ 6642 ]Chords
John Legend
All Of Me
[ 6486 ]Chords
Little Mix
Secret Love Song
[ 6150 ]Chords
Jeff Buckley
Hallelujah
[ 6135 ]Chords
Ed Sheeran
Thinking Out Loud
[ 6054 ]Chords
James Bay
Let It Go
[ 5313 ]Chords

2002

MuseScore Studio, the world’s most popular composition and notation software, is created as part of the MusE sequencer's codebase.

2000

Audacity is launched publicly, giving people access to free audio post-production tools in over 30 languages.

1999

Audacity is started by Dominic Mazzoni and Roger Dannenberg during their time at Carnegie Mellon University. At the time it’s called CMU Visual Audio.

Audacity

1998

Eugeny Naidenov founded Ultimate Guitar, one of the world’s first guitar-tab sharing sites.

1998

Ultimate Guitar

Everything
starts
here

A Story We Share

You just explored an interactive timeline of the milestones and events that shaped us into the company we are today. It shows the steps we took to become who we are, the innovations we fueled, and the communities we grew along the way.
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It’s the story from both sides, Hal Leonard and Ultimate Guitar, our shared legacy. Like a good song, it features some amazing solos and some beautiful harmonies. Plus, you’ll find a nod to our next album, the future. So have a scroll, spend some time looking back with us, and get excited for what’s to come.

Don’t forget to check Hal Leonard’s history too.

Hal Leonard

1930 / 2025

The original sheet music publisher