Complex sentence: Therefore, the label only has to present one face to the public, the backing band is easy to house, and the songs will likely stay simple and accessible as the frontman will have to sing and play guitar at the same time.
Split into simpler sentences: Therefore, the label only has to present one "face" to the public. This lineup often leads to songs that are fairly simple and accessible, as the frontman (or frontwoman) will have to sing and play guitar at the same time.