George Lowen Coxhill known professionally as Lol Coxhill, was an English free improvising saxophonist. He played soprano and sopranino saxophone.
Coxhill at the Red Rose Club in North London, 2007
The sopranino saxophone is the second-smallest member of the saxophone family. It is tuned in the key of E♭, and sounds an octave higher than the alto saxophone. A sopranino in F was also described in Adolphe Sax's patent, an octave above an F alto (mezzo-soprano), but there are no known built instruments.
Orsi curved sopranino saxophone (c. 2000)
Top to bottom: a curved E♭ sopranino saxophone, a straight E♭ sopranino saxophone, a C soprano saxophone, and a B♭ soprano saxophone.