Grimes "Go" (live video)

Grimes 'Go' (live video)
Grimes recently promised to debut a song that she had written for Rihanna but had been rejected, and sure enough, she performed "Go" at New York's Governors Ball on Friday (June 6).

The low-quality fan-shot footage makes it tough to make a proper judgement of the song, but it seems to be a melodic, R&B-flavoured pop tune with an immediate, vocal-centred sound. This gives way to thumping, EDM-flavoured breaks. All in all, it seems like it could have been a solid Rihanna track.

Hear it below.