It sounds like you have a RB1 Drum Kit.
The Cymbal Expansion Set is usable on RB2, Beatles, RB3 and RB4 Drum Kits.
They have three extra colour coded inputs on the back.2
I prefer the GH5 guitar.2
For those that disagree, I'd like to know your thoughts on why they should still be Spotlight / Rival challenges.1. Rivals will die if DLC is not included as spotlight, as the score ceiling will be reached early and it will become a grinding competition.
2. It is enjoyable to get a good score on spotlight songs, even if you don't like them.
3. Building a competitive crew is difficult, but recruiting a couple of people with lots of dlc is a always a good idea.6
Re: Why Freestyle Vocals should be BANNED in Rivals -- Automated Spotlight Scores, AFK Grinding, etcHow sad. Games should be enjoyed. Getting an FC this way only cheats yourself.2
1. Some packs/songs have no PS4 version yet.
2. RBN songs are not available for PS4, and may not transfer over.1