I used to be so good at Guitar Hero. Back in my day we were scoring our own tracks for GH2 to run on a hacked Playstation 2 and rewiring our controllers with extra strum buttons on the fretboards for wicked awesome two-handed solos. This is the most interested I’ve been in a Guitar Hero clone since then. Having little if anything to do with guitars (nor heroism), Street Orchestra is an app developed by Swedish devs HiQ in a tag team with equally-Swedish ad agency SCP, in an attempt to get the younger generation interested in classical music. Says SCP’s interactive producer Russel Clark: “The mission…