GarageBand is a software application that allows users to create music or podcasts. It is developed by Apple Inc., and is included in all shipments of iLife. GarageBand is a streamlined digital audio workstation (DAW) and Music Sequencer, which can record and play back multiple tracks of audio.
Built in audio filters allow the audio track to be enhanced for recording guitar instruments, etc. The tuning system can also effectively imitate the auto-tune effect when tuned to maximum. GarageBand can play virtual instruments, used for creating songs or playing music live using over 100 sampled or synthesized instruments, which can be played using a USB or MIDI keyboard connected to the computer, or using an on-screen virtual keyboard.
Additional instruments are available in the five GarageBand Jam Packs, which are separate expansion packs offered by Apple Inc. Each Jam Pack costs $99 USD, and adds dozens of virtual instruments, as well as more loops.