Experiment with your music collection. See which songs will mix 100% harmonically. Beatmatching in iMashup is automatic, although you will have to align the audio waveforms to get the downbeats lined up.
The automatic beatmatching works well for most songs, but occasionally a slight adjustment can make things even tighter.
Each track has a Solo button. Pressing this button lets you hear only that track, which can be useful for locating the downbeat when adjusting beat matching and moving song segments into place.
iMashup includes adjustable volume and EQ envelopes. The volume envelope is orange, the low EQ envelope is green, the mid EQ envelope is blue, and the high EQ envelope is pink.
Based on Mixed in Key technology iMashup is an iOS app that lets you create your own mashups in minutes. The new 2.0 version allows you to copy & paste, loop, and change the order of segments.