Another awesome track off their new album "Advanced Basics", here we go...

Half Step Down

Main riff
F#5-D5-C#5-B5-E5-F5 (C#5 
and F5 are played only once or twice, and don't play the C#5 in the verse)

Pre-Chorus(Can this be love? part, I'm not 100% positive on it)
F5-F#5-C#5-D5-E5-C#5-D5-E5

That's it, aside from the pre-chorus I think it's pretty accurate, post any correction 
in the comments. Go buy "Advanced Basics" from the best band ever, USS!!!!!!!!!!!!!!!!!!!!!!!!!!!1