Guitarist's effect, lot more distorted (7)

I believe the answer is:

tremolo

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'guitarist's effect' is the definition.
'tremolo' can be an answer for 'effect' (I have seen 'Vibrato effect ' mean 'tremolo' so perhaps 'effect' could also mean 'tremolo'). I'm unsure of the 'guitarist's' bit.

'lot more distorted' is the wordplay.
'distorted' indicates an anagram.
'lot'+'more'='lotmore'
'lotmore' with letters rearranged gives 'TREMOLO'.

Can you help me to learn more?

(Other definitions for tremolo that I've seen before include "Fluctuation in pitch" , "Wavering effect in music" , "Paganini's effect" , "Wavering note" , "Musical wavering effect" .)

I've seen this clue in The Telegraph.

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