Question: What saxophonist did bandeoneon player and "nuevo tango" pioneer Astor Piazzolla collaborate with on his album Summit?
Sentence (from "Astor Piazzolla"): Astor Pantaleón Piazzolla (] , ] ; March 11, 1921July 4, 1992) was an Argentine tango composer, bandoneon player, and arranger.
Relevant evidence: No