Related Clues:
- Tough key for pianists
- Certain govt. issue
- Chopin's Polonaise No. 16 in ___
- One of the black keys
- F sharp equivalent
- Short Internet message
- Quick Internet message
- A black key
- Chopin's fifth étude is in it
- Online message
- Short message via AOL, say
- Part of a C major chord
- Modern message
- Key of Chopin's 'Butterfly' Étude
- F sharp alias