Mixed in Key Mashup is a professional-level remixing application. It lets you create your own remixes and mashups by experimenting with music of your choice. Mashup lets you mix any number of songs from your collection of music. There is a professional DJ algorithm that beats-match everything together and creates 100 percent harmonic mashups with zero key clashes. You may create loops, copy-paste portions of a song, adjust loudness and bass of the songs, move the split song segments around, etc. The results can be saved as professional-quality audio files.