I have never heard any of the music from Anderson.Paak, but critics have loved him for quite some time. He always gets a ton of Grammy nominations, so I see him as a safer pick for hip hop. (Who else would they get, DaBaby?)
Fall Out Boy have sold out time and time again, so I could see them appearing on here without any problem. Calling them rock stretches that definition a bit; I label them alternative at best, but Pete and Patrick have hammed it up on camera before. This could work.
Diplo seems the strangest pick of the three as he mostly produces (and makes terrible country music under his real name, but that's neither here nor there) and has the least screen presence of the bunch. This reads more like a "who canceled?" booking.
Color me surprised that they capped this at three. Why not throw in a country and/or Latin artist to round out the week?