The information about Adrian Rollini doubling on piano comes from Rust. In his Lang discography, Ray Mitchell assigns the piano part to Rube Bloom.

Five sides were waxed in June 1927 by Annette Hanshaw.

I'm Somebody's Somebody Now. http://www.youtube.com/watch?v=_jJb8b_1gsA  I don't hear a piano.

I Like What You Like  http://www.youtube.com/watch?v=Qd-dX8fMjeE  I hear a piano solo and a piano behind the single string solo by Eddie. If it is Rollini both on piano and bsx, then Rollini does a very fast change from piano to bass sax at the end of Eddie's solo. I also hear Joe's violin behind Eddie's single string guitar. So the pianist cannot be Joe.

Ain't That A Grand and Glorious Feeling  http://www.youtube.com/watch?v=j9nL7rr5kA0   I don't hear a piano

Who-oo? You-oo. That's Who! http://redhotjazz.com/songs/hanshaw/Who-ooYou-ooThatsWho1927.ram  I don't hear a piano

Under the Moon http://www.youtube.com/watch?v=L5WO0kATepM  I don't hear a piano. I hear chimes (Berton)

Rust gives four instrumental stars - Eddie, Joe, Adrian and Vic. Ray gives, in addition, for the first two sides, Rube Bloom.

The question: who plays piano in I Like What You Like, Adrian Rollini or Rube Bloom?

Albert