Both richard cheese and Weird al yankovic are really good
richard cheese is not that funny for me, but is songs sound quite good
while Weird al might be very funny if you like this type of humour
Here are my favorites for you Bongo:
Weird al:
https://www.youtube.com/watch?v=lOfZLb33uCg
https://www.youtube.com/watch?v=notKtAgfwDA
https://www.youtube.com/watch?v=ZcJjMnHoIBI
Plus, he has a song in pokemon's 2nd movie soundtrack
https://www.youtube.com/watch?v=gBfRY84FeGM
Richard Cheese:
https://www.youtube.com/watch?v=_qx_SEMdAlU
https://www.youtube.com/watch?v=4Fsbbr-zsIs
https://www.youtube.com/watch?v=ScVfwoKIWds