Here is the boss music of Mario Party 9.

 

Tough Enemy

Now You've Done it!

Battle with Wiggler

Wiggler's Mad!

Battle with King Bob-omb

King Bob-omb's Mad!

Battle with King Boo

King Boo's Mad!

Battle with Blooper

Blooper's Mad!

Battle with Chain Chomp

Chain Chomp's Mad!

Battle with Bowser Jr.

Bowser Jr.'s Mad!

Battle with Bowser

Bowser's Mad!

 

 

Which one is your favorite?

My favorite is Bowser Jr.'s Mad!