Donny,
1- the harmonizer buttons are exactly like on T1; there are two lights corresponding to "Signal" and "Over" plus the lights over the buttons "Vocal harmony", "Talk", "Effect", "VH type select" and "Mic setting".

2- Yes, whenever you select a song in the Music Finder the four OTS change according to the song chosen.
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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.