This would have been in the mid eighties or so. Dad was in Holy Cross Hospital in Silver Spring, MD. I don't remember why. It might have been endocarditis, it might have been back trouble. It was Rosh Hashanah, Jewish new year. He shared a room with some guy.
So I'm visiting him and the guy who leads services at his DC-area pickup congregation, David, walks in carrying a briefcase. Dad can't attend services. Dad wasn't religious but he was very heavily Jewishly identified. Well, there's an important mitzvah (commandment) that usually takes place at services, but....
David snaps open the case. He hands me a holiday Siddur, a prayer book, open to a particular page. He hands me a yarmulke (skullcap). He then pulls out a Shofar, a ram's horn. "Call," he says. So I do.
"Tekiah" and he blows a blast. A Shofar sounds a little like a somewhat raw-sounding and sloppy bugle with a little siren thrown in.
"Shvarim" and he blows three ascending tones
"T'ruah" and he blows nine rapid tones.
He finishes, puts it all away "Gut yuntif" (good holiday - Yiddish), "l'shanah tovah" (to a good year, Hebrew),whatever. And he leaves.
I still wonder about the roommate, laying there in a Catholic hospital, watching this.
Added later: a video showing what shofar sounds like, including the calling