Related Clues:

• Speaker's lead-in
• Physical sound
• Many a freshman course
• Words about a speaker, briefly
• 'I see now'
• First lines
• First song on an album, perhaps
• 'Feels so good!'
• Hot tub sound
• Host's responsibility
• Low-level course
• 101 course, generally
• Patient's remark
• 'Ladies and gentlemen ...,' e.g.
• 'So nice!'