Maybe not in this case, but there was certainly a time when there was more money and interest in Cantonese music than Mandarin music. Almost every Mandarin singer who goes to HK records at least some Cantonese music. The trend seems to be going the other way now though with the rise of China and the suppression of non-Mandarin languages in Taiwan and Singapore. Personally I thought there was some interesting English music being produced in HK too pre-handover.