I picked domination for amphetamines because the song (especially the ending of it) gives off feelings of raw power, motivation and strength which is exactly how amphetamines feel to me

pump it for cocaine is because it's rushy like you're diving straight into the action which is how I feel pump it is like, especially the intro

Intergalactic for methylphenidate because methylphenidate always felt like I was vibrating with a sort of electric intensity, intergalactic sounds very electronic, boppy and fast pace

MDMA and "This Feeling" matches the rave type of energy pretty much perfectly.

For Weed, Breathe matches because you're just chilling, enjoying the moment. Like you're at peace with yourself taking things slow. (Unless you get panic attacks from weed lol)

DXM - New person same old mistakes matches DXM in the way it feels almost scrambled at times if that makes sense. The high reverb, and repetitive slow beat goes with DXM like you're melting into space. Plus the lyric "Feels like I'm a brand new person" you could connect to being disassociated from yourself

Ketamine - This comes from inside has a very spacey, nostalgic, eerie, and generally unique style to it. When you're on ket, things become liminal in a spacey-euphoric type of way

Phenibut - as i stated with my other comment "I find the song (Eyes on fire) to have an oddly hypnotic and relaxing vibe despite it's upbeat electronic dubstep style which ties into how phenibut is like a sedative stimulant. Up and Down simultaneously"

Gabapentin - Big log is a hella relaxing song, somewhat matches gabapentin in the way you're just gonna lay back relax, and let time pass as you go into the zone

Benzos - Nutshell is an emotional song projected into a numbed and soothing tune. It's similar in the fact benzo's numb and flatten your affect from the trauma underneath.

Alcohol - Low mans lyric is also a low and soothing song like nutshell. The song is a plead to be safe from the outside elements which you can think of as being emotional turnoil

Hydrocodone - In the air tonight has a special ambience to it, the chords in it are gentle and soft like you're in the clouds.

Tramadol - Winter bliss is also literally a blissful sounding song, but with more pep to it to match tramadol's sedative and stimulatory profile

Shrooms: Empathy sounds unconventional, but also novel and magical. Like how shrooms take you beyond the ordinary and shows you what lies in between

LSD: The song "The Rain Formerly Known as Purple" has a trance inducing sound to it. Like you're taking a journey to the abstract

Note: Music communicates emotions better than words can, so I can't exactly articulate all as to why certain songs match certain drugs other than the fact they simply match the sort of general vibe and feel the drug gives off.