Sam and Casey put on a real show!

It was Glee that gave an entirely different, bigger – fashionable – way for the mashups, one of the most difficult ways of singing.

Sam Tsui and Casey Breeves fit Thinking Out Loud and I’m Not The Only One, that even have some identical lyrics, in a superior manner, 2 very interesting vocal registers and a mashup very curious and so unlikely to happen due to the extreme difficulty to making it work.