return empty array instead of active record not found when filtering by scope
return empty array instead of active record not found when filtering by scope

jamesblunt/chorus,jamesblunt/chorus,prakash-alpine/chorus,lukepolo/chorus,prakash-alpine/chorus,prakash-alpine/chorus,lukepolo/chorus,lukepolo/chorus,lukepolo/chorus,jamesblunt/chorus,prakash-alpine/chorus,jamesblunt/chorus,prakash-alpine/chorus,lukepolo/chorus,lukepolo/chorus,lukepolo/chorus,jamesblunt/chorus,jamesblunt/chorus,jamesblunt/chorus