It was Koussevitsky who commissioned French composer
Maurice Ravel, in 1922,
to orchestrate
Modest Mussorgsky's piano work "Pictures At An Exhibition".
Koussevitzky made the first recording of the Ravel orchestration of
"Pictures" with the Boston Symphony Orchestra. The Ravel-orchestrated
"Pictures at an Exhibition" became the single most famous orchestral
version of a work originally composed for a solo instrument, and the
fame of his version has surpassed several other orchestrations of it,
including
Leopold Stokowski's. After Koussevitzky's death, it was recorded by
practically every famous conductor and orchestra, and has become a
standard work in the repertoire of symphony orchestras all over the
world.