Reaper

REAPER is a complete digital audio production application for computers, offering a full multitrack audio and MIDI recording, editing, processing, mixing and mastering toolset.

Using REAPER you can import any audio and MIDI, synthesize, sample, compose, arrange, edit, mix, and master songs or any other audio projects. If you add a hardware audio interface and a microphone, you have a complete professional quality recording studio, suitable for recording anything from a soloist to a band to an orchestra.