Not even the OFF Topics are safe from my text walls >:D
My music liking is a bit weird, in that I prefer to listen to instrumental music most of the time (mostly from games), but here it goes:
Composers I like - game soundtracks (or other places) I've heard their music in:
ZUN - Touhou series
Toby Fox - Undertale and Deltarune
Arata Iiyoshi - Pokemon Mystery Dungeon: Explorers of Time/Darkness/Sky
Chris Christodoulou - Risk of Rain 1 and 2
Waterflame - Age of War, Castle Crashers, and a bunch of other musics he made
Pascal Michael Stiefel - A Hat in Time
Ben Prunty - FTL: Faster Than Light
Laura Shigihara - Plants vs Zombies
(idk who the composer is and too lazy to search) - Pokemon Diamond/Pearl/Platinum
(idk who the composer is and too lazy to search 2) - Pokemon Ranger 2: Explorers of Almia
(idk who the composer is and too lazy to search 3) - Advance Wars: Dual Strike
(idk who the composer is and too lazy to search 4) - Ace Combat 4 and 6
(idk who the composer is and too lazy to search 5) - Ace Attorney Investigations: Miles Edgeworth
(idk who the composer is and too lazy to search 6) - Age of Empires 2
(idk who the composer is and too lazy to search 7) - Bomberman 3 and 4
(idk who the composer is and too lazy to search 8) - Donkey Kong Country 2
(idk who the composer is and too lazy to search 9) - Dungeon Defenders
(idk who the composer is and too lazy to search 10) - Earthbound
(idk who the composer is and too lazy to search 11) - Endless Space
(idk who the composer is and too lazy to search 12, this one I think some if not all of the songs were free to use ones, but not sure) - Ib
(idk who the composer is and too lazy to search 13, this one same thing as above /\) - Mad Father and Misao
(idk who the composer is and too lazy to search 14, this one same thig as above /\) - The Desolate Hope
(idk who the composer is and too lazy to search 15) - League of Legends (Bit Rush, Bit Rush Arcade Ahri and Lillia Theme)
(idk who the composer is and too lazy to search 16) - Lufia and The Fortress of Doom
(idk who the composer is and too lazy to search 17) - Super Mario 64
(idk who the composer is and too lazy to search 18) - Mario Galaxy
(idk who the composer is and too lazy to search 19) - Mario Kart DS and Wii
(idk who the composer is and too lazy to search 20) - Mario & Luigi: Partners in Time
(idk who the composer is and too lazy to search 21) - Mario Party DS
(idk who the composer is and too lazy to search 22) - Super Mario RPG
(idk who the composer is and too lazy to search 23) - Megaman X
(idk who the composer is and too lazy to search 24) - Megaman ZX
(idk who the composer is and too lazy to search 25) - Megaman ZX Advent
(idk who the composer is and too lazy to search 26) - Space Engineers
(idk who the composer is and too lazy to search 27) - Spore Creatures DS
(idk who the composer is and too lazy to search 28) - Steins;Gate (the VN)
(idk who the composer is and too lazy to search 29) - Terraria
(idk who the composer is and too lazy to search 30) - One Piece Soundtrack
(idk who the composer was and too lazy to search 31) - Naruto Soundtrack
Anime/VN vocal musics:
Akame Ga Kill - openings 1 and 2
Angel Beats - opening
Ano Hana - opening and ending
Ansatsu Kyoshitsu - all 4 openings
Chaos;Head (the anime) - opening (though the anime is horrible, fight me)
Charlotte - opening
Code Geass - openings 1 and R2 1 and endings 1, 2 and R2 2 (best anime I've ever watched, fight me)
Cowboy Bebop - opening and ending (though the anime is boring, fight me)
Neon Genesis Evangelion - opening (though... fight me, I didn't like it at all)
Fate (the anime) - SN openings 1 and 2, UBW openings 1 and 2 and Zero openings 1 and 2 and ending 1
Full Metal Alchemist Brotherhood - openings 1, 2 and 5 and ending 1
Haikyuu! - openings 1, 3, 4 and 5 (haven't watched 4th season yet, don't kill me)
Hataraku Saibou - opening
Higurashi No Naku Koro Ni (the anime) - openings 1 and 2 and ending 2 (though the second half of Kai was trash, fight me)
Hunter x Hunter - opening 1 (all openings are the same music, just alternating different parts of it, but I prefer the first one)
Initial D - Deja Vu (haven't even watched it, but DEJA VU, I'VE JUST BEEN IN THIS PLACE BEFORE)
Juuni Taisen - opening
Kaguya-sama: Love is War - openings 1 and 2
Kobayashi-san Chi No Maid Dragon - opening
Konosuba - openings 1 and 2
Mob Psycho 100 - openings 1 and 2
Nichijou - opening
Noragami - opening 1 (haven't watched second season yet, don't kill me)
One Piece - ...openings 1, 2, 3, 4, 5, 6, 11, 14, 15, 16, 17, 19 and 22 (Haven't watched past those yet, don't kill me) (also the anime drags out way too much, so reading the manga is better unless you are watching for the soundtrack, openings, and some great scenes here and there that are better when animated)
Shinsekai Yori - endings 1 and 3
Soul Eater - opening 1 (second opening is bad, fight me, also, one of if not the worst finale I've watched in an anime)
Steins;Gate (the anime) - opening and 0 opening
Steings;Gate (the VN) - opening, bad end and true end (haven't played the 0 VN yet)
Sword Art Online (wait, don't kill me yet, I have a modified copypasta for you) - openings 1, 2, 3, 4, ending 1, GGO opening, GGO ending, Alicization openings 1 and 2 and Unlasting
(Now hold on, I know what you're thinking, "a bad SAO is a bad SAO, you can't say it's only half bad", well, TJ "someone who had enough time and patience to read up until now" Yoshi, hear me out. A bad SAO actually has 8 parts to it. SAO 1 part 1, which is ok, SAO 1 part 2, which is trash, SAO 2 part 1, which is good, SAO 2 part 2 (the excalibur mini-arc), which is ok, SAO 2 part 3, which is good, SAO Alternative: GGO, which is good, SAO Alicization part 1, which is great, and SAO Alicization part 2, which is bad. And together, this forms one bad SAO run. Now, usually, it's the SAO 1 part 1 that's useful. Because that's the starting part. However, sometimes it's sufficient to just use the SAO Alternative: GGO, which allows SAO to not be bad. And as for the SAO 1 part 2, well, there's currently no cases where that's useful or important, so don't worry about that part. Now, if we map out the required SAO parts for a bad SAO run, it would look like this. We merely need to watch SAO 1 part 1 to reach the 2nd temp, we need to watch SAO 2 parts 1 and 3 to finish it, and we need to watch SAO Alicization part 1 and the last few episodes of part 2 to get to the end. So, how many SAO watches is that total? Well, it appears to be five, and if we were doing this SAO run in isolation, then yeah, it would be five. But, in a full bad SAO run, there are other SAO watches that occur earlier in the run, such as having watched the bad parts beforehand. So, if we take those SAO watches into consideration as well, then how many SAO watches would it take? The naive answer would be five. One to watch SAO 1 and four more to finish 2 and Alicization. However, we can do better. We can actually do it in three by simply remembering the previous watch of SAO 1 and Alicization part 2 to be used for the bad SAO run. Because the half bad SAO run only required SAO to be watched, not actually rewatched. So in this fashion, SAO 2 and Alicization only adds on an additional three SAO watches to the run since the SAO 1 and Alicization part 2 just leech off of a previous watch. So, to capture this phenomenon, we call it 3 and a half bad SAO watches. On a single SAO run basis, you'd round that up to four. But in a full bad SAO run, you'd round it down to three. So, in conclusion, since that SAO 1 and Alicization part 2 watch counts in some context but adds no additional SAO watches in other contexts, we refer to it as a half bad SAO watch.)
Other vocal musics:
Some of League of Legends Worlds' songs: 2014, 2015, 2016, 2017 and 2018 (haven't heard the others)
Borderlands 2 - Short Change Hero
Portal 1 and 2 ending songs
Warcraft 3 - I am a Murloc and Power of the Horde
A bunch of parody songs from Instalok
Idk if Acapellas count as vocal, but anyway: a bunch of acapellas by Smooth McGroove
(And a lot of others that are either too randomly selected to list them all, or might or might not have been intentionally or unintentionally left out... or I might have just forgotten to add)
(Also, yeah, I might have a problem with these walls of text
)
TL;DR just read the first 8 lines of the first list and call it a day (in other words, starting from "ZUN - Touhou series")
erm, sounds like Medicine Man by Barclay James Harvest to me 
)