Montgomery Gentry is in fact derived from the members' last names- the duo are Eddie Montgomery and Troy Gentry.
Here's the MEGA JUMBO playlist featuring all of the songs our Marauders would sing at Aragog's funeral- some more appropriate than others- as well as the other songs mentioned during the episode:
Amanda isn't just a huge dork about HP. She also enjoys YouTube videos about Teslas, her skincare regimen, and a good cult documentary. Besides 'co-host of FFH and wifey to Mr. Wilson', her favorite role is kitty mom- and she has numerous original songs to prove it.