Complex sentence: Vance performed at BBC's Proms In The Park in Belfast on 8 September 2012 and in late 2012, Vance was selected as one of the support acts for British artist Ed Sheeran's UK tour.
Split into simpler sentences: Vance performed at BBC's "Proms In The Park" in Belfast on 8 September 2012. Afterwards, in late 2012, Vance was selected as one of the support acts for British artist Ed Sheeran's UK tour.