This episode was too meta for my tastes, it actually made me uncomfortable. The Uncle Grandpa April Fools episode felt more subtle than the "footage courtesy of Cartoon Network" joke they used twice.

Music is all good and fine… when there's time for it. In this episode there were far more important things they should have shown. Like maybe more than a couple of minutes of Greg interacting with the Gems. We already knew from previous episodes that Greg was an aspiring musician who couldn't reach his dreams.

This episode glossed over something that really should have been at least a two-parter, especially when so much time was wasted on the song that just reiterated the fact that Greg had big dreams for his career.