Possible Clues:

• Record low music by weaver
• K?
• Stagger behind, in lowest position
• Lowest point in Gibraltar?
• With 70 Across, Stephen King and Dave Barry's musical group (with "the")
• Discombobulate a weaver — the very lowest
• Lowest possible level, and a musical feature of four answers
• All-time low ... or a musical hint to the answers to this puzzle's starred clues
• Music for bass sounds like something you'd experience at The Point in the lowest sense
• Shake buttocks for a song