G major, strummed hard. Too bright, too folk, no drama.
Polyphonic arrangements found online often force your hand into impossible stretches (e.g., holding a low bass note on the 1st fret while reaching for a melody note on the 12th fret) because the arranger did not optimize the layout for standard tuning. The "Nessun Dorma" Guitar Tab Fix: Key Sections nessun dorma guitar tab fix
Need a specific bar corrected? Upload the faulty tab section to a guitar forum with my checklist above — most errors will become obvious immediately. G major, strummed hard