Just listened to: a recording of Beethoven’s Concerto for Violin, Cello, and Piano in C major, Op. 56 “Triple Concerto” (1804) by David Zinman conducting the Tonhalle-Orchester Zürich on Arte Nova (2005). Just as bands with three regular lead vocalists have a leg up on bands with just one, concertos with three lead instruments have a leg up on concertos with just one. Simple, energetic, classical-mode Beethoven.