The most common and most likely answer to this crossword clue is the 6 letter word DVORAK
I've seen this crossword clue in The Guardian
D
V
O
R
A
K
More clues leading to the result DVORAK
- God willing, it’s all right to admit artist and composer
- One who composed for keyboard
- Rex brought in vodka cocktail for Czech composer
- Composer from Denmark hosts ball in Victoria and Albert’s capital
- Famous Bohemian wanting vodka, shaken or stirred? That’s about right
- Sort of vodka that’s about right for Czech musician
- Composer drunk vodka with king
- Composer‘s vodka cocktail with a dash of red-bull
Buddy explains!

The straight part
We know that "Famous Bohemian" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case famous bohemian = dvorak.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.