a collocation with loudly: to say that someone listens to music loudly is not correct, is it?
Definition of loudly adverb from the Oxford Advanced Learner's Dictionary: loudly( adverb) in a way that makes a lot of noise. We can talk, sing or laugh loudly. We also can listen to loud music. Is it correct to use the adverb loudly to express the same idea? To listen to music loudly or to listen to loud music? The latter seems correct to me.

Question

a collocation with loudly: to say that someone listens to music loudly is not correct, is it?
Definition of loudly adverb from the Oxford Advanced Learner's Dictionary:  loudly( adverb)  in a way that makes a lot of noise. We can talk, sing or  laugh loudly. We also can listen to loud music. Is it correct to use the adverb loudly to express the same idea?  To listen to music loudly or  to listen to loud music? The latter seems correct to me.

Answer

As you said, 'loudly' is an adverb, it modifies the meaning of a verb. So if you said 'he listens to music loudly', the loudly would be modifying the verb, which is 'listens', in other words you would not be saying that he listens to loud music, but that he made a noise while listening to music, perhaps by singing along, or banging a table in time to the music.

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The correct way to express the meaning of this thought is:  "To listen to loud music."

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Agreed. Loud describes the music, and doesn't make much sense as an adverb describing listen. Though listening loudly sounds pretty profound.