Here is Sondra Radvanovsky in the Act 1 finale of Lucrezia Borgia singing a really gargantuan high Eb to cap the act. The young tenor Grigolo sounds wonderful, and this is surely thrilling singing.

Here is a 1970 perfomance of Lucia, from the entrance of Edgardo until the act's end. The 58 year old Richard Tucker is rolling out the gold as the tenor, Edgardo.

Who is his Lucia here? She was an internationally known soprano and this performance is NOT from the Met.