Rossini’s last opera, Guillaume Tell, was written for Paris and is an extremely ambitious piece of great musical sophistication. It’s also very long. Performed uncut, a rarity, it runs something like four hours including ballets. It’s also hard to cast with the role of Arnold Melcthal in particular making unusual demands. It’s a high tenor role combining the flexibility needs of a typical Rossini role with something much more heroic. The soprano role of Mathilde has some of the same issues; signature Rossini coloratura is combined with the sort of dramatic heft one might more associate with early Wagner.