Cryptic crossword clue
A cross-dresser may be given away by his pitch a different kind of pitch is found in truly buxom

Buddy explains!

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.