Related Clues:

• DJ's concern
• First few bars
• Foreword, briefly
• 101 class, briefly
• Musical start, for short
• Speaker's lead-in
• Many a freshman course
• Words about a speaker, briefly
• First lines
• First song on an album, perhaps
• Preambles, briefly
• Emcees' duties
• Emcees' openers
• Host's responsibility
• Low-level course