There's a stretch of a few seconds while Greg waits, just to make sure Doctor's done showing off how smart he is, before baring his teeth in something akin to a grin.

"Oh. I gotcha. Big evil corporation trying to control us, with their nefarious sellout music!" He waves his arms for emphasis. "It's up to this ragtag team of hip young musicians to save the day, with the power of friendship and rock and roll! Oh boy!"