I'm doing a talk at RubyConf with Ben Bleything and Yossef Mendelssohn, but what if three guys talking about Ruby and music isn't enough?
Would you settle for five? You can get an extra fix of Rubyists making music at both Laurent Sansonetti's talk and Greg Borenstein's.
Greg is talking about using Ruby with Arduino. Arduino's hardware for physical computing. Here's where music comes in:
Laurent is talking about MacRuby. Rumor has it that the first OS X application to feature embedded MacRuby scripting is Elysium, and Laurent will demo that.