To broaden your gralla repertoire, here you have Skamot, a Webpage with many gralla scores.
Josep Ma. González, owns a very interesting gralla Webpage, dealing with many subjects. Some of the items (e.g. scores) are accesible only to group members, but to become one is no problem. Click to get into Quatre notes.
Even though we did'nt speak of this till now, the gralla is accompanied rythmically with a drum. We got through Josep Ma., of "Quatre notes", these links to practice different rhythmic patterns with the drum. Click to access Drum rudiments, and Virtual drumming.
One of the best Web pages on "gralles", is grallers.cat
and a link to one of the best groups of grallers, the Ganxets - grallers del Baix Camp.
Dol i tab, a Webpage devoted to dolçaina valenciana.
anothe one of dolçaina valenciana, El Club de la Dolçaina.
Also a page devoted to dulzaina castellana, A ritmo de dulzaina.
This one is devoted to The navarrese gaita. Gaita in spanish generally refers to a bagpipe, but in this case, it is a kind of dulzaina.
In the Web page of Instrumentos musicales tradicionales de Aragón and on this double reed page, there are a few descriptions and pictures of "dulzainas", and also the "trompa de corteza" and some "obóes rústicos".