Audacity
Free, open source, cross-platform audio software. Audacity is an easy-to-use, multi-track audio editor and recorder for Windows, macOS, GNU/Linux and other operating systems. Developed by a group of volunteers as open source. Audacity can record live audio through a microphone or mixer, or digitize recordings from other media. Import, edit, and combine sound files. Export your recordings in many different file formats, including multiple files at once. Supports 16-bit, 24-bit and 32-bit. Sample rates and formats are converted using high-quality resampling and dithering. Support for LADSPA, LV2, Nyquist, VST and Audio Unit effect plug-ins. Nyquist effects can be easily modified in a text editor – or you can even write your own plug-in. Easy editing with Cut, Copy, Paste and Delete. Also unlimited sequential Undo (and Redo) in the session to go back any number of steps. Real-time preview of LADSPA, LV2, VST and Audio Unit (macOS) effects. Plug-in Manager handles plug-in installation.
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Rosegarden
Rosegarden is a music composition and editing environment based around a MIDI sequencer that features a rich understanding of music notation and includes basic support for digital audio. Rosegarden is an easy-to-learn, attractive application that runs on Linux, ideal for composers, musicians, music students, and small studio or home recording environments. Rosegarden is currently an application for Linux only. Now that we have ported to Qt 4, and now that Qt is freely available for all platforms without a commercial license, there are fewer obstacles standing in the way of eventually becoming a cross-platform application. Rosegarden uses the Qt 4 libraries for various common controls, but you can run it under any window manager or graphical environment you like. The Open in Notation Editor option on the main view's Segments menu will open all the currently-selected segments together in a single editor.
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Sumotunes
Easy-to-use web-based music studio to create songs, play with instruments or remix other users' original songs. Supports MP3 export and cloud storage for your songs. Compose your own hit song, even if you're tone deaf. Write the next big opera or pop hit! Composing music has never been this easy. Share your hit tracks with the community and gain fame. All from your own home! Mix the next banger, downtempo or lo-fi chillstep mix. You can also remix songs! Drums, bass, guitar, keyboards, or the sounds of everyday life. We've got a cornucopia of sounds to riff with! Become a beatmaker by layering instrumentals and patterns. See the music as you make melodies for others to hear. Enjoy an online image editor, photo editor, audio editor, video editor, music studio, code studio, pixel editor and 3D studio for only $9 / month.
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Ardour
Grab yourself a nice audio interface. Plug in a microphone or a keyboard. Add a track, press record, and you got it. Cut, move, stretch, copy, paste, delete, align, trim, crossfade, rename, snapshot, zoom, transpose, quantize, swing, drag, drop. Import audio or MIDI from your hard drive or the Freesound database. All with unlimited undo/redo. All in the same window. Mute, solo, fader, automate, EQ, dynamics, insert, send, pre-fader, post-fader, sync, monitor, isolate. Floating point fidelity, the most flexible mixer architecture in the industry, hundreds of plugins, and external control surfaces. Ardour's core user group, people who want to record, edit, mix and master audio and MIDI projects. When you need complete control over your tools, when the limitations of other designs get in the way, when you plan to spend hours or days working on a session, Ardour is there to make things work the way you want them to.
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