No Carolina Eyck is not conducting, she is playing the Theremin in Kalevi Aho's concerto for Theremin (8 Seasons), with the BBC Philharmonic Orchestra at the BBC Proms.
You can listen to it now. That will be a 96kbs stream in the US. If you have a VPN, you can get the UK stream at 320kbs.
The Theremin is an instrument played entirely with your hands in midair. It is very difficult to play, as there is no keyboard or fret, so you have to have perfect pitch. It produces an other worldly sound, but can also imitate the human voice in an uncanny way. It is sometimes called the perfect instrument
I have long been an admirer of Kalevi Aho's compositions and this one does not disappoint. This instrument can produce some extraordinary sounds. There is also some very deep bass, which will give your subs a work out.
The Proms have had some really good concert this year. The first full season for three years, because of Covid. There are 72 concerts from July 15, until September 5. All are on BBC sounds, and three a week are also televised. You can't see the TV streams in the US without a VPN link.