This quartet became Internet darlings with the treadmill choreography of its video "Here It Goes Again"
The Piano Guys first made waves on the internet with their self-made music ...... 
OK Go first found fame with the viral success of their 'Here It Goes Again' video,... [DOC] [TLE] That's Shanghai - July 2015 by That's Online - issuu [PAR] Jul 3, 2015 ...