"what band are you seeing next?"
"you know, it's the one that has a bunch of letters"
"SBTRKT?"
"No, it wasn't SBTRKT?"
"Hmm. Not sure I can help you then"
"It definitely had letters though, similar to SBTRKT"
"Was it maybe SHXCXCHCXSH?"

"No, it was shorter than that"
"You're not talking about XXYYXX are you?"
"The xx?"
"No XXYYXX"
"No, I'm not talking about any of those guys"

The Starbucks test is going into Starbucks, saying your name, and the barista from hearing it once can write it correctly on the cup.

So it's pronounceable and also possible to spell correctly from hearing once.