The most common and most likely answer to this crossword clue is the 8 letter word HARMONIC
I've seen this crossword clue in The Daily Telegraph
H
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M
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Buddy explains!
The straight part
We know that "Musical" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case musical = harmonic.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.
What does HARMONIC mean?
HARMONIC noun- A component frequency of the signal of a wave that is an integer multiple of the fundamental frequency.
- The place where, on a bowed string instrument, a note in the harmonic series of a particular string can be played without the fundamental present.
- One of a class of functions that enter into the development of the potential of a nearly spherical mass due to its attraction.
- One's child.
- Pertaining to harmony
- Pleasant to hear; harmonious; melodious
- Used to characterize various mathematical entities or relationships supposed to bear some resemblance to musical consonance
- Recurring periodically
- Exhibiting or applying constraints on what vowels (e.g. front/back vowels only) may be found near each other and sometimes in the entire word.
- Of or relating to a generation an even number of generations distant from a particular person.