i Cryptic Crossword No 478

[souxie]

21 Across, Opening note penned by composer(6) ?R????
16 Down, A doctor's ordered a lot of shellfish(9) O?T???O?A
22 Down, Countryman turning to say 'Oh dear'(5) ??D?E

Many Thanks in Advance

[HowardKennitby]

ostracoda ?

[cupid04]

21a] Previn?

[cupid04]

22d] hodge

[Gerryh]

21 Breach, re Bach

[HowardKennitby]

someone care to explain the wordplay for 'hodge'? please.

[Lie-in King]

22d Hodge (countryman, a rustic) - 'eg' (say) + 'Doh' ("Oh dear") (both turning)

[HowardKennitby]

thanks

[cupid04]

I do get somethings right sometime!