Possible Clues:

• Jazz trumpeter's nickname
• Jazz trumpeter Gillespie, familiarly
• Jazzman Gillespie, to fans
• Baseball's Dean, to fans
• Nickname in classic jazz
• Jazzman Gillespie, for short
• Jazzman Gillespie, familiarly
• Gillespie, to friends
• Gillespie, to fans
• Jazzman Gillespie or pitcher Dean, familiarly