Unfortunately, there's not a lot you can do if it was all acoustic instruments (with MIDI this is quite easy). The best pitch correction plug-in I've used is Wave Mechanics' Pitch Doctor, but even with this I don't think you'll be satisfied with the outcome. There's really nothing good enough to "correct" multitimbral material.

If you don't mind the whole album being sped up by 1.0594630943592952645618252949463, and have some of the >10kHz regions butchered somewhat, you could try speeding up the entire recording by that ratio above.

Stretching audio usually yields three options: Preserve pitch, preserve tempo, preserve neither. Pick that last one.