More discoveries:
if you select the SA Acoustic Guitar and play two notes a 4th apart, they will sound as a "hammer on" or "slide" sound.
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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.