Quiet land occupied by new Welsh community (7)

I believe the answer is:

penarth

'welsh community' is the definition.
(town in Wales)

'quiet land occupied by new' is the wordplay.
'quiet' becomes 'p' (music symbol for 'piano', ie soft or quiet).
'land' becomes 'earth' (synonyms).
'occupied by' is an insertion indicator.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'earth' enclosing 'n' is 'enarth'.
'p'+'enarth'='PENARTH'

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