I absolutely love the Harmonica and the Guitar Emotes. Those are so much fun and relaxing to listen to while taking a short break from the fight. Since you can have up to 4 people in your group, I think a Banjo and Violin would go extremely hard in the game. I also adored when both emotes sync'd up to one another too.
I love your game! I just bought it about 10 hours ago and have gotten one of my friends addicted to it too! THANK YOU SO MUCH FOR ALL THE FUN :DDDD