I am interested in modifying one of my cd players, so that i can
adjust the pitch of the music played by it. I have read various other
posts on this subject, but all are over 10 years old.

Please do not post providing information on the various types of cd
players for sale with this function built in, I already know and dont
care.

I am aware that this is not just a matter of changing the rotational
speed of the cd. But a high school physics and general interest in
electronics background has allowed me to realise that it cant be to
hard to change the speed of the clock that cd players use to sample
the music by.

A previous post suggested that this "clock" was created by a crystal
oscillator, although when i ripped my old cd player apart, i couldnt
see anything that might be a crystal, although i dont really know what
it would look like. (obviously not a little rock in the cd player)

Possibly these crystals from the posts years ago have been replaced by
an IC???

Can anyone verify this, and give me details about different clock ICs,
or anything else that may help me.

Was thinking about using a variable frequency oscillator as input into
the place where the clock/timer was. Uhhm, but yeh, any suggestions?