Need help on this video

[carmel]

Can someone give me the bass line on the song that he is
playing on this video. And do anybody recognize what sound he
is playing ?

https://www.youtube.com/watch?v=VLeL-ptB0FE&feature=player_detailpage#t=316

[KeyofB]

It's just,
Gb, walk Ab, A, Bb
B
Db Eb Gb

Then, he does this little thing on the B chord like Db, Eb, Gb, Eb, Db, Bb, B, Db as a turnaround.

I hope this helps. Quartet is really not my style.