Very well done!

I must admit, I never listened to Chicago. Thanks to you, I've just discovered they had some great songs and prominent songwriting ability. Musical quotes from Led Zeppelin and Beatles are pure ear candy.
Last, but not least, your bands performance is second to none. Excellent! Thanks for sharing.

Only listened to the one in the OP sounds very professional here, thanks for sharing.

Wow...   Seriously, what's not to like?  That is some good stuff!   "Nailed it" doesn't quite cut it... 
 
Everything sounds fantastic; the performances of each and every instrument along with the overall blend.  And the lead vocals are freakin' killing it on both tunes!  Oh, and the harmonies in 25 or 6 to 4 are also spot on. 
 

Outstanding!  You made an old song sound fresh.  Did you do this in Sonar?  If so, what a great demonstration of the power of Sonar.

Икфмщ.......Нщг пгні КЩСЛ!!!
 
Ьщкуб ьщкуб ьщку

excellent - video is brilliant too.