SPELLING T4

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Across
  1. 3. Deep-toned members of the orchestra's string section
  2. 4. Unaccompanied musical spotlights
  3. 5. Grand instrument with 88 black and white keys
  4. 7. Dynamic musical pairing
  5. 8. The scientific study of living organisms
  6. 9. The science that deals with the Earth's rocks and physical structure
Down
  1. 1. Relating to heat or retaining warmth
  2. 2. Twangy, circular instrument heard in bluegrass music
  3. 3. Large stringed instrument played while seated
  4. 4. Performance by a single musician
  5. 5. Uprights and grands in a showroom
  6. 6. The total distance around the outside of a shape
  7. 7. Double acts or pairs
  8. 8. Plucked string instruments in a folk band