The 'Lazy Song' is definitely among my Bruno Mars favs too.
and will surely bring a smile to everyone in the audience.

I wanted to add that I feel the 'scaled down' acoustic versions of these tunes (keyboard, guitar + vocals) is idea to create a live arranger mode performance singing (with VH) and playing all the keyboard parts live. Nothing cheating about that if you're actually playing & singing. In fact this arranger method requires the added challenge of producing live, the tasks of multiple live band members.