Complex sentence: He took his first overseas tour at the age of sixteen with The American Youth Jazz Orchestra under the direction of Hal Schiff and attended Indiana University earning a BMD and the highly coveted "Performers Certificate".
Split into simpler sentences: He took his first overseas tour at the age of sixteen with The American Youth Jazz Orchestra under the direction of Hal Schiff. Jim attended Indiana University earning a BMD and the highly coveted "Performers Certificate".