Crossword Puzzle Lonely number

Clue: Lonely number

Number of Los Lonely Boys (TRES with 4 letters)
Relatively lonely number, though not as bad as one, in song (TWO with 3 letters)
Vocal number (TUNE with 4 letters)
Golfer's number 4 wood (CLEEK with 5 letters)
Fluorine's atomic number (NINE with 4 letters)
Large number of fans (ARRAY with 5 letters)
Unassisted numbers (SOLI with 4 letters)
"___ number one" (WERE with 4 letters)
Very large number to Brits (MILLIARD with 8 letters)
Of number eight (OCTAL with 5 letters)