"The Basque alboka (albogue), is a single-reed woodwind instrument consisting of a single reed, two small diameter melody pipes with finger holes and a bell traditionally made from animal horn. Additionally, a reed cap of animal horn is placed around the reed to contain the breath and allow circular breathing for constant play" (from Wikipedia). In some areas of Andalusia it's called "gaita de El Gastor" or "gaita gastoreña" (El Gastor bagpipe).

Appears on:

• La Musgaña, Agarrao antiguo
• Kepa Junkera, Bok-spok
• Oskorri, 25 Kantu Urte
• Hiru Truku, Hiru Truku II
• La Jambre, El lagarto

See also https://saisaibatake.ame-zaiku.com/musical_instrument/gakki_jiten_alboka.html