Related Clues:

• It's short of a quartet
• See 70-Across
• Bassoon, e.g.
• Quartet minus one
• Destiny's Child, e.g.
• Lounge group, maybe
• Harmonium part
• Kingston, for one
• Bee Gees or The Stooges, e.g.
• Riverbank sight
• Pond plant
• Wynken, Blynken and Nod, e.g.
• Bagpipe, e.g.
• Destiny's Child, among others
• Cream, of 1960's rock