Help ID a song I don't know the words to

It’s a song I know I’ve heard before, but I could barely hear any of the lyrics. The only words I could make out are “oh what can it be”, which don’t help me much on google.

I last heard it on an episode of Conan O’Brien. It was one from January, with Heather Graham, Sam Rockwell, and Russel Simmons. It’s here http://www.nbc.com/Late_Night_with_Conan_O’Brien/episode_guide/794.html.

It was rerun just the other night, so someone out there might be able to remember it.

The particular song was in the opening segment, where Conan brings a winnebago and entertains some people lined up to get tickets to his show in there. I believe they closed the segment playing this song.

It’s a song from the 60’s, or at least sounds like it. I think what they call “garage band”.

Any help you can give me will be greatly appreciated.

I don’t watch that show, but it might be “Permanent Waves” by The Kinks.