Finding Keyboard Parts for Songs

Sorry if this is a newbie question but I've looked on google for hours and can't find the answer.

I have been told to find the sheet music for the keyboard parts of some songs, specifically:

Closing Time - Semisonic
All I Wanna Do - Sheryl Crow
Fade Into Me - Mazzy Star
What I Got - Sublime

I am NOT looking for keyboard or piano arrangements of the songs, but the actual notation for the keyboard or piano parts used in the song. For "Closing Time" this is pretty easy to figure out on my own (BGBGDGDGBGBGCGBG). But I have no clue for the others (Don't even hear keyboard in "What I Got")

I'm not sure if this information is readily available and I just don't know where to look or if it's impossible. I've given up Googling, hopefully someone here can direct me.

Finding Keyboard Parts for Songs

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