15: Flute or saxophone variety
17: Ones whose proposals are seconded
30: Turn on the waterworks
38: Embankment down by the riverside
41: Center-to-quarterback transitions
48: Put more shells in the shotgun
51: They're beaten in the kitchen
64: Holmes mantra, and a hint to this puzzle's theme
67: One working with Linux, e.g.
71: Skin designs, for short