In the picture a launeddas player with a costume.

Notice the particular grip of the launeddas different from the traditional configuration. The croba, the connection of the tumbu to mancosa, is played with the right hand (the assignment of the croba in the classical arrangement of cuntzertu or launeddas belongs to the left hand); the mancosetta also said dextrorse is, instead, used with the left hand.

This inversion can be retraced to the need of the player to articulate a particularly complicated melody with his dominat hand on the other melodic pipe. That happens in determined conditions of structural inversion, in which the accompaniment of a give melody made by a specifical pipe is assigned to the hand which brings the melody and vice versa.

In simple words: the defter hand (which, as said, is often the dominant hand) acts on the pipe with which it is necesary to develop a melodic music, by means of the alternate pentaphonic fragment which is at the second melodic pipe's disposal.