The first timecapsule send into space didn't contain any music by Bach. the motivationwas that we didn't have TO SHOW OFF!
Well let's show off an send ' them' the MAX from planet Earth, let them be amazed, take their breath away and add your suggestion to this list:
Go for a starter:
The Koln Concert 1 by Keith Yarreth ( Opera Kôln 1975): an improvisation(!)
No spaceship needed for this capsule: it is on internet and I am Sure they still have a windows vista somewhere to decryptate the message ( Alliens are definetely apple-lovers although they've developped 'pear' ( pear tot pear)
