This is an idiom/slang expression. I wouldn't worry too much about parsing such items. "My speed" means "my preference"; the "more" simply sets up a comparison to something else (another type of music).
Student or Learner
Hello, teachers, I have a question.
About a sentence " Mellow music is more my speed" , I would like to ask you about the word "more". Is it an adjective or an adverb?
If it is an adjective, I think "more my speed" has a somewhat rare structure because it is formed as "adjective+possessive+noun"
Even if it is an adverb, I stil can't understand the structure.
Or was there a preposition "of" which has been omitted after "more" ?
Thank you in advance for your analysis!
How can I understand this phrase?
Please, correct all my mistakes. I should know English perfectly and if you show me my mistakes I will achieve my dream a little bit faster. A lot of thanks.
Not a teacher nor a native speaker.