[sdiy] Decoupling caps?

[charlie lamm]

I have read often that when setting up PCB's one
should always use decoupling caps (.1uF or so) for
IC power pins.

I am designing a PCB for the ASM-1 VCO.  I am limited
in board space and want to make a single sided board so
I can press-n-peel.

Now, I know this may be too general a question, maybe too general, but,
how important are the decoupling caps in a circuit like this?

I assume decoupling would be extremely important in OTA's,
since they seem to react badly to poorly regulated supplies....
but with TL082's etc?  Can I get away with not using them
and still have the VCO sound decent (in tune/not too badly distorted or
noisy).

Maybe I can put some decoupling caps away (bigger? 10uF?) from the IC's
where there is a bit more room on the board?

Or should I just tweak the design to figure a way to fit these in?