Robin is a former sound engineer, and has extensively worked as a composer for short films and documentaries. Now the best qualification one could attribute to Robin is probably 'geek' as he spends most of his time beholding the wonders of internet rather than revolutionizing the music scene.
Greg is also a geek, but a musical one at that. He has played the violin at a young age, continued with the piano, but all the classical mumbo jumbo stopped when the hormones and puberty kicked in. Now Greg plays the guitar and sings in a funky free-style manner that would even make Eminem blush.

They are the Gigdoggies. Mruff!