A new version of Dj Sonicx Mixer now called "Dj Sheepwolf Mixer", in this version you can compose bigger melodies using more keyboard notes, and use multiple sounds to compose, you can also change the sound effects on your keyboard (there's 6 sound effects available, distributed in 4 packs). Of course, you can also mix them with the kicks, hats, and snares (and now, some extra musical loops).
