Kat Dahlia flexes her vocal chops with a cover of A Great Big World's 'Say Something.'

The piano-driven ballad is a big change from Dahlia's previous releases like 'Gangsta' and 'Fireman,' which find the 23-year-old performing in a sing-songy, but aggressive manner. This one is more emotive; her voice can be heard trembling as the song reaches its climax.

Christina Aguilera

Currently, Dahlia is preparing her debut album, 'My Garden,' for a release in early 2014.