<P> The show 's theme song is called `` Today is Gonna Be a Great Day '' performed by Bowling For Soup . There is a Christmas version for `` Phineas and Ferb Christmas Vacation '' , a Halloween version for `` That 's the Spirit '' and `` The Curse of Candace '' , a winter version for `` For Your Ice Only '' and `` Happy New Year ! '' and another Halloween version for `` Druselsteinoween '' , `` Terrifying Tri-State Trilogy of Terror '' , and `` Face Your Fear '' . An adaptation was also made for the 2011 Little League World Series . </P>
<P> The show 's theme song is called `` Today is Gonna Be a Great Day '' performed by Bowling For Soup . There is a Christmas version for `` Phineas and Ferb Christmas Vacation '' , a Halloween version for `` That 's the Spirit '' and `` The Curse of Candace '' , a winter version for `` For Your Ice Only '' and `` Happy New Year ! '' and another Halloween version for `` Druselsteinoween '' , `` Terrifying Tri-State Trilogy of Terror '' , and `` Face Your Fear '' . An adaptation was also made for the 2011 Little League World Series . </P>
who did the theme song for phineas and ferb
who did the theme song for phineas and ferb
Bowling For Soup
Bowling For Soup