RH is a lot of triplets and simple fills. To sync that with the LH and sing is the challenge. This music to me is not Arranger stuff. Arranger is too stiff. Just piano, maybe layer some bass with the LH and drums. Rock on !
Funny but all the Arranger stuff i do and the hottest act around here is a guy doing a piano sing along with a drummer. Used to be a puesdo dueling pianos until the second piano playing girl couldn't stay sober or show up on time.
He's LOUD and pumps the bass up on the PA but the rooms are selling out all the time. Plays the first verse and bridge to a song then on to the next. Simplle format but keeps the audience's attention.