Not to mention, a crafty ReSurround tool for spatial visualization as well as real-time stretch, FX processing and Notation Reader for writing and reading music. The reason Reaper reigns supreme are features such as powerful MIDI routing in multiple media formats at any sample, bit and depth rate. You must be wondering why does Reaper feature on this list of free music production software when it asks you to pay a nominal $60 fee after free trial? The truth is, Reaper can actually be used forever even after the 2 months trial is over.