SoundCloud has become ubiquitous around the web as a source for DJs and new bands to upload their tracks and get some recognition and attention for their work. Game soundtracks like Hotline Miami and FTL: Faster Than Light found homes here, as well as new pop-rap acts like HyperCrush and Santigold. Hypem culls songs from music blogs all over the web, and those songs more often than not come from SoundCloud.
There is a movement away from SoundCloud, but the influx of uploads to the service suggest that more people than ever are trying their hands at making music. Electronic music is inexpensive to produce, and while musical knowledge is required, the bar for entry is much lower than for a standard musical instrument.