The cantu a chiterra (Sardinian for "singing with guitar") is a typical Sardinian form of monophonic singing in Sardinian language and Gallurese, accompanied by a chiterra sarda, or Sardinian guitar. This type of song is particularly prevalent in the northern part of the island; in particular in the Logudoro, Goceano, and Gallura. Very likely, some of the songs existed before the invention of the guitar, for example, Cantu in re (Song in D), but with the advent of the instrument they have developed different variations.