premise: A Backing vocalist provides harmony with their voice.
hypothesis: Backing vocalists are singers who provide vocal harmony with the lead vocalist or other backing vocalists . In some cases , a backing singer may sing alone as a lead-in to the main vocalist 's entry or to sing a counter-melody . In pop and country songs , backup vocalists may perform vocal harmony parts to support the lead vocalist . In hardcore punk or rockabilly , other band members who play instruments may sing or shout backup vocals during the chorus ( refrain ) section of the songs . Marianas Trench (band) . The band consists of members Josh Ramsay ( lead vocalist , rhythm guitarist , pianist , songwriter , and occasional drummer ) , Matt Webb ( lead guitarist and backing vocalist ) , Mike Ayley ( bass guitarist and backing vocalist ) , and Ian Casselman ( drummer , percussionist , and backing vocalist ) .