Original: By fifteen years of age, Ma had graduated from Trinity School in New York and appeared as a soloist with the Harvard Radcliffe Orchestra in a performance of the Tchaikovsky Rococo Variations.
Simplified: By the time he was fifteen, Ma had graduated from Trinity School in New York and appeared as a soloist with the Harvard Radcliffe Orchestra playing Tchaikovskyâ s' Variations on a Rococo Theme.