There are at least two artists with the name Sean Grant.
(1) Sean Grant is a singer, most well known for her work with US producers, Kings Of Tomorrow.
(2) Sean Grant, from Northampton (UK), is an acoustic singer/songwriter as a solo artist, and electric lead guitarist with signed rock/pop band Terrapin Trainstation (TMD Records).
Sean also used to play for Northampton based rock trio The Peaceful Warriors who had a sound highly influenced by The Police and the John Butler Trio, which you can still hear in his solo work.