MusoLoop and OnSong both help musicians organise material for rehearsals and live performance, but they take different approaches. OnSong is a dedicated performance app with deep chart formatting, annotation and stage-control capabilities. MusoLoop is a browser-based repertoire platform designed to make a band’s music library easy to organise and share.
OnSong is designed around the stage
OnSong provides setlists, song charts, formatting controls, annotations, chord diagrams, metronome functions, MIDI integrations and other performance features. It also supports dedicated stage workflows such as foot-pedal control and external displays.

MusoLoop is designed around the shared repertoire
MusoLoop brings lyrics, chords, audio, video, PDFs and notation into a browser-based song library. That makes it useful before and after the gig as well as during performance: organise the repertoire, prepare a set, share selected songs and let guests or students view material.
Browser access vs dedicated performance tooling
A major distinction is platform. MusoLoop does not require a dedicated app, while OnSong is centred on its iOS performance environment. OnSong therefore offers a depth of stage-specific integration that a browser-first product is not trying to replicate.
Which approach fits?
- OnSong may suit you if: you need advanced chart presentation, annotations, pedal control, MIDI and a dedicated stage-performance workflow.
- MusoLoop may suit you if: you want your repertoire available in a browser, need to mix different media and notation types, or want easy guest/student access.
If your main problem is running charts from a tablet on stage, compare the stage tools carefully. If your main problem is keeping the whole repertoire organised and accessible to a band, class or audience, MusoLoop’s broader sharing model is worth considering.