Related Clues:

• Engine measures: Abbr.
• Auto performance factor, informally
• Foreword, e.g.
• Tach measures
• Musical opening
• Preface, for short
• 33 1/3 and 45, for short
• Emcee's text
• Engine stats
• Emcee's kickoff
• Tachometer reading: Abbr.
• Chap. 1 preceder
• Short preamble
• Jazz singer's cue
• Musical lead-in