Can you do the Dark Souls 3 Ringed City DLC Bosses?
So that would be..

-Demon from Below & Demon in Pain
https://www.youtube.com/watch?v=sQ_byT2KAiY
-Demon Prince
https://www.youtube.com/watch?v=4eHJh6sJW0k

-Halflight, Spear of the Church (Preflibly with the phase music Seperate, I love phase 2)
(Phase 1) https://www.youtube.com/watch?v=ty0-55AvDKA
(Phase 2) https://www.youtube.com/watch?v=9GLSQbgx-Sw

-Darkeater Midir (Might need 2 seperate phases)
https://www.youtube.com/watch?v=IiOo56N0Om4

And most importantly:
-Slave Knight Gael (All Phases, preflibly seperate)
(Phase 1) https://www.youtube.com/watch?v=k1jTw8zNurg
(Phase 2) https://www.youtube.com/watch?v=uJg97Zj_BO0
(Phase 3) https://www.youtube.com/watch?v=Icu68mFvsb4


And I guess you could do Ashes of Ariandel but it's soundtrack is not as good.

oh..
-AND PLEASE DO ALDIA FROM DS2!
https://www.youtube.com/watch?v=Ub-bg-rmEF4