Each of the musical artists in this group have ONE thing of note to me: 

Y&T has ONE Billboard charted hit on the Hot 100 – “Summertime Girls” - but they get extra credit for the cool album cover.

Kathy Young has released ONE – yes, exactly ONE – LP in her entire career.  Her big hit "A Thousand Stars" reached #3 on Billboard's Hot 100 and #6 on the R&B charts (huh?)

Oh, and I do like her 1964 duet with Chris Montez; the B-side of a 45 that failed to chart.

Yasmin has ONE Grammy.  Who? What? How?  Quantifier: It’s a Danish Grammy.  She also has exactly one charted song in America: “Wanna Dance” at #76