I'd say there are no "rights and wrongs", Col...just personal preferences and perhaps, expectations.

Best wishes for the success of your singing lessons...concentrating on the vocal, especially as a student, is paramount...the backing music is incidental in that case.

Ian
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.