Yesterday lunchtime in the RBA soprano Lauren Eberwein and the Rosebud String Quartet (Sheila Jaffé, Aaron Schwebel, Keith Hamm and Rachel Desoer) entertained us with a program of Haydn and Schoenberg. First up was an arrangement of Haydn’s Arianna a Naxos. We got the recitative, Teseo mio ben, and the two arias, Dove sei and Ah! che morir vorrei. It’s basically a cantata with tessitura that sits very nicely for Lauren’s voice. It was an elegant performance all round with some passion in the concluding aria. And it’s always good to hear a Haydn vocal work.