Tre Giorni Son Che Nina. A Romantic Baroque aria By Giovanni Battista Pergolesi 1710 - 1736. https://en.m.wikipedia.org/wiki/Giovanni_Battista_Pergolesi
When training as a teacher of Alexander Technique (nearly 40 years ago!) we had weekly singing lessons. Angela Caine, our wonderful teacher, used to get us singing from Schirmers 'Twenty-four Italian Songs and Arias of the 17th and 18th Centuries'. Over the past couple of years working in ambulance and police time for musical practice has been limited. So I'm going back over some of the old songs from the Alexander Technique teacher training? My voice is strong enough when standing and singing. Sitting and playing and singing simultaneously is definitely more of a challenge. Baby steps....