Mark Summer is a renowned American cellist and composer, best known for his association with the Grammy Award-winning classical crossover group Turtle Island Quartet. However, "Julie-O" is actually a composition by another cellist, Mark Summer's colleague and friend, Mark O'Connor.
"Julie-O" is a solo cello piece composed by Mark O'Connor in 1988. It has gained popularity for its unique blend of classical and contemporary styles, incorporating elements of bluegrass and jazz into the classical solo cello repertoire. The piece showcases O'Connor's virtuosity and creativity, making it a distinctive and enjoyable composition for both performers and listeners alike.