Listen & perform
Player
Play your albums and playlists: covers wall, waveforms, synchronized lyrics and custom playlists.
Open PlayerLive Prompter
Lyric prompter for live concerts: the verse about to come, the ones after, and the waveform to keep you on track.
Open PrompterGig Anim
Turn track lyrics into animated visuals driven by a performance definition — for gigs and videos.
Open AnimationWrite & time lyrics
Lyrics Editor
Align SRT lyrics on the audio waveform: region editing, looping, and keyboard shortcuts for everything.
Open EditorCompose, mix & master
Groove Lab
Drum + bass composition for non-drummers: generate a groove, fix it on a grid, chain sections, export MIDI.
Open Groove LabTrack Mixer
Mix a song's stems into a stereo mixdown by drawing level lines directly on the waveforms — no faders.
Open MixerMassembler
Multi-track audio sequencer: cut clips from audio files, arrange them across tracks, play and export.
Open MassemblerMastering Studio
Master your tracks in the browser: EQ, compression, limiting and stereo processing, powered by Go/WebAssembly.
Open MasteringSequence Builder
Curate playlists by testing transitions: hear how each track's ending flows into the next one's beginning.
Open BuilderLyrics Book
Leaf through a master lyrics file like a book: pages, search across words, titles and authors, and a trail of which lines were reused where.
Open BookTwin Diff
Compare two renditions of a song side by side, like a text diff: what stayed the same, was reworked, added or dropped — with the lyrics on both waveforms.
Open Twin DiffCompanion tools
Some Mazy tools live outside the browser — find them in the repository: cover_ed, a desktop app to edit audio metadata and artwork; srt_generator, a CLI that drafts SRT lyric timings from a song; music_cache_updater, which keeps the player's metadata cache fresh; and mp3-playlist-manager, which writes playlist metadata and cover art into the MP3 files themselves.