Crossword Puzzle Keys again

Clue: Keys again

Keys in (e.g. ENTERS with 6 letters)
Leave the keys for the Prizm with the valet? (CHECKYOURGEO with 12 letters)
Keystone bumbler (KOP with 3 letters)
"Keeper of the Keys" sleuth (CHAN with 4 letters)
It requires many keys (PIANO with 5 letters)
Like a keystone (CENTRAL with 7 letters)
Scale without black keys (AMINOR with 6 letters)
They may have keys (MAPS with 4 letters)
"Puts the keys of the future at your fingertips" (Philadelphia, 1876) (TYPEWRITER with 10 letters)
Keys on the piano? (ALICIA with 6 letters)