Nice one Tyson. I like these guys - very cute indeed!
As you say, you could have taken the poses a bit further. Body wise, that's may not be easy, though some slight stretchyness on the joints would work a treat

(is it your own rig or biped?)
Some of the phenomes could be a little more pronounced, and some of the transitions could be a little more snappy (his mouth seems to 'float' a little after ''Mozart'') I think Iest has it when he said 'feel the words' hehe
Anyhoo as a quick test it's cool man! Funny that we both did lip sync tests in the same week.