What does the cryptic crossword clue "Skinhead has issue, I note (8)" mean?

The wordplay uses a charade (building blocks). S (synonym="kin") + EMIT (synonym=""issue"") + ONE (synonym=""I"") = SEMITONE The answer is SEMITONE.

Skinhead has issue, I note (8)

Guardian Cryptic #29455 | 18 Across | 2024-08-07 flower