Think of as many Mozart operas as you can (and feel free to include singspiels and any other works performed on stage in the list). Fewer than 10? Keep trying. Fewer than 20? Still not quite there.

It is impossible to comprehend the number of classical music compositions that exist. Do we even know ten percent of them? Here’s a fair question. Of Mozart’s 626 compositions do we know 62 of them?

• Sung in: English with English surtitles. • Running time: 3 hours, with intermission. • When: 7:30 p.m. Saturday; 2 p.m. Sunday. • Where: Tucson Music Hall ...

When it comes to Mozart’s opera "The Marriage of Figaro," Adam Plachetka has sung both of its leading male roles: Figaro and Count Almaviva. And when the Czech bass-baritone finishes his three-day run ...

Think of as many Mozart operas as you can (and feel free to include singspiels and any other works performed on stage in the list). Fewer than 10? Keep trying. Fewer than 20? Still not quite there.