Collaborative Piano is a term used to denote a field of the piano
profession where a pianist works in collaboration with one or more
instrumentalists, singers, dancers, or other artists. This field is
also referred to with its former name as Piano Accompanying, a term
which has traditionally implied inferiority, subservience, working "for"
rather than "with" a recital partner. Collaborative piano, on the
other hand, is a term that implies equality, association, and teamwork.
[Source: Collaborative
Piano Blog ]