dcrochu's version as of 16nov2022 + rsigns + <eu> tag + <sp>*</sp>

Fixed differentia : this EUOUAE (carried over from Sandhofe, but Turco has the same) is referenced as 1g3 in recent Solesmes books

Added NABC brackets

Standardized EUOUAE to g (with pes), conforming with Mocquereau/OMH. Also changed the first note to comply with Mocquereau/OMH.