Summer (Where Do We Begin?)

"Summer (Where Do We Begin?)" is a song from the movie Phineas and Ferb: Across the 2nd Dimension. It is performed by Phineas and Ferb with sense enthusiasm as their attempt to demonstrate the joys of summer vacation to their second dimension counterparts. The song is included as the 7th song in the Phineas and Ferb: Across the 1st and 2nd Dimensions album and it was sung also by Baljeet, Buford and Isabella in "Fly on the Wall" and was voted #5 on Phineas and Ferb Musical Cliptastic Countdown Hosted by Kelly Osbourne.

In 2015-2016, the song was also included by crossover animated musical special ''Phineas and Ferb: Go to Gravity Falls. It is performed by Phineas and Dipper as demonstrate the joys of a special crossover summer vacation to their second dimension counterparts.