Recently I came across a Japanese user Hiroshi TACHIBANA who has produced a script running under the Processing app which is able to convert MusicXML files into a format that Sonic Pi can play. I have spent some time using and amending this script, and find it very useful in transcribing music to run on Sonic Pi, that I might not otherwise have done, because of the time taken to type in all the notes and their durations.
I have written two articles about this. In the first one I use the sample Japanese piece that Hiroshi was using the script to convert, and in the second I introduce the amendments that I have made to the script, and walk through the conversion of a simple piece to illustrate its features. I also give a download link to several pieces that I have converted, both the midi, MuseScore and Sonic Pi versions, so that you can try them out yourself