Complex sentence: He performed professionally for many years as second violin of the well-known Guarneri Quartet, playing extensively in the United States, Canada, Europe, Japan, Australia and New Zealand in recital and as soloist with orchestra.
Split into simpler sentences: He performed professionally for many years as second violin of the well-known Guarneri Quartet. Dalley has since played extensively in the United States, Canada, Europe, Japan, Australia and New Zealand in recital and as soloist with orchestra.