Concerto for Two Violins - on the voice flute (recorder), played by Thomas Pickering.

The Concerto for Two Violins in D minor, BWV 1043, also known as the Double Violin Concerto (Doppelkonzert für zwei Violinen), is one of the most famous works by Johann Sebastian Bach and considered among the best examples of the work of the late Baroque period.
This piece is played on the voice flute by a guildhall student as a little fun during Covid-19 lockdown.
The voice flute (also the Italian flauto di voce and the French flûte de voix are found in English-language sources) is a recorder with the lowest note of D4, and is therefore intermediate in size between the alto and tenor recorders.