...yes, but then the pitch will vary as well!
A good alternative is to find one of those fakebooks with transcriptions of famous songs or solos...or a midifile with a good version of the same song...which you could slow WAY down without affecting the pitch!
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Korg Kronos 61 and PA3X-Pro76, Roland G-70, BK7-m and Integra 7, Casio PX-5S, Fender Stratocaster with Fralin pickups, Fender Stratocaster with Kinman pickups, vintage Gibson SG standard.