Religious traveller, quiet one, left joyless (7)

I believe the answer is:

pilgrim

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'religious traveller' is the definition.
(someone travelling on pilgrimage)

'quiet one left joyless' is the wordplay.
'quiet' becomes 'p' (music symbol for 'piano', ie soft or quiet).
'one' becomes 'i' (Roman numeral).
'left' becomes 'l' (common abbreviation).
'joyless' becomes 'grim' (I am not sure about this - if you are sure you should believe this answer much more).
'p'+'i'+'l'+'grim'='PILGRIM'

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(Other definitions for pilgrim that I've seen before include "One on journey to shrine" , "Visitor to shrine" , "Palmer" , "One journeying to shrine etc" , "Person who journeys for religious reasons" .)

I've seen this clue in The Daily Express.

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