Audacity is free, open source software that can be used to record and edit audio files in various formats. It has tools for recording via a microphone or other audio input, as well as importing existing files. Recorded audio or imported files can then be edited using a variety of tools under the Edit and Effects menus. These include cutting, copying, pasting, and applying audio effects like changing volume levels, pitch, tempo, fading and removing vocals. Sections of the audio can be selected for more precise editing. The software provides an easy to use interface for these recording and editing functions.