Crossword Genius

One orchestra, too (4)

Ross

I believe the answer is:

also

'too' is the definition.
(synonyms)

'one orchestra' is the wordplay.
'one' becomes 'a' (a thing is one thing).
'orchestra' becomes 'LSO' (London Symphony Orchestra).
'a'+'lso'='ALSO'

(Other definitions for also that I've seen before include "an indication of more to come" , "To boot" , "'Besides, moreover (4)'" , "in accompaniment" , "into the bargain" .)

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