Conversation so far:
who did the whistling in for a few dollars more
Alessandro Alessandroni can be heard as the whistler on the soundtrack for Sergio Leone's film, For a Few Dollars More.
Did Alessandro Alessandroni play a musical instrument?
Alessandro Alessandroni played multiple instruments, including the guitar, mandolin, mandolincello, sitar, accordion and piano.
What is a mandolin?
A mandolin is a stringed musical instrument in the lute family and is usually plucked with a plectrum.
What is a mandolincello?
The mandocello is a plucked string instrument of the mandolin family that is larger than the mandolin, and is the baritone instrument of the mandolin family.

Question: what genre of music did the musician create
Self-contained rewrite: what genre of music did the musician alessandro alessandroni create