To appreciate , you must understand the landscape of 2005. Most hobbyist musicians were either wrestling with complicated trackers, expensive hardware sequencers, or DAWs like Cubase SX and Cakewalk Sonar, which came with steep learning curves.
Early iterations of virtual synthesizers and Acoustica-branded instruments allowed for MIDI-based composition without external hardware.
While primitive by today's standards, the feature set in Mixcraft 2.0 was exactly what the "bedroom producer" of 2006 needed: