Related Clues:

• Mendelssohn's Opus 20, e.g.
• Ennead less one
• C to C or A to A
• 1824 Schubert work
• Stravinsky's Wind __
• Byte, in computer slang
• Two foursomes
• The Ivies, e.g.
• Series of eight
• Quartet times two
• Sliced pizza, often
• Duet x 4
• Oxygen atom's protons, e.g.
• Eight of a kind
• Original Crayola pack, e.g.