3-piece jointed 18th Century bass curtal accompanied by a bocal is
based on the instrument in the Borja Cathedral Museum. Like earlier
curtals, it was of primary importance in liturgical music and was
played not just in Spain but throughout the New World as well.
Its' tone hole placements, similar to earlier Spanish bass curtals, suggests a Dorian modal scale. In addition with
newly examined treatises and repertoire, Josep Borras has made a strong
case that these instruments were in fact tuned to Chorton, or choir
pitch -one tone above chamber pitch. His discovery of an 18C fingering
chart not only corroborates this but offers another indication of how late
these instruments were in use.
This 3-Piece curtal has 5 keys and two brass ferrules. A fingering chart for the instrument can be accessed here.