The pitch bend on the guitar in the first song instantly reminded me of the Forest Naval in Pikmin!
The warbly bells in the second track reminded me of Serena Beach hotel in Mario sunshine a lot! And also the plasm wraith chase in Pikmin 3.
It is now my mission to relate every track to something else at this point I'm 2 for 4!
The third track is reminding me a lot of Twilight Town in Paper Mario TTYD with the bells! Just the first part of course the second half is absolutely its own thing and it goes hard! Also the title has the word cavern and there are a lot of caverns in Pikmin 2
You said the word "Moth" in the fourth track and there is a moth boss in pikmin 4 I WIN!
I was able to relate every song to Pikmin now that's a good OST!
Always fresh like a Wendy's Beef Patty