Crossword Puzzle Louis Spohr chamber work

Clue: Louis Spohr chamber work

Chamber work (e.g. NONET with 5 letters)
Chamber workers: Abbr. (SENS with 4 letters)
Chamber worker?: Abbr. (SEN with 3 letters)
Work in a chamber, say (LEGISLATE with 9 letters)
Some chamber works (SEXTETS with 7 letters)
Schubert chamber work (THETROUTQUINTET with 15 letters)
Black Chamber workers (CODERS with 6 letters)
Test subject #1 perceives 1 as brown, 2 as red, 8 as gray; maybe he works as an ... (ELECTRICIAN with 11 letters)
Euclidean work (ELEMENTS with 8 letters)
G. & S. work of 1882 (IOLANTHE with 8 letters)