During the 11th to 15th century A.D., rotte (German) or rota (Spanish) referred to a triangular psaltery with at least 10 strings, held like a harp in front of the musician.[1][2] The playing position was different from other psalteries, as the Rotte might be held like a harp, leaned sideways (flat against the musician's chest), or rested on the lap.[3] Two styles of rotte have been inferred from images: the first is a triangular box with strings on one side, the other has strings on both sides (both hands playing at once, resembling a harp).[1] The instruments are shown played with both plectrum and with fingers.[1]
The names chrotta, rotte, rotta, rota and rote have been applied to different stringed instruments, including a psaltery, lyre and to a Crwth (necked lyre played as a fiddle or lute).[2][4][5] In the 15th century it was also used to name a fiddle, synonymous with the rebec.[2]
Knowing a rotte (psaltery) from a triangular harp in the medieval minatures can be challenging; rottes may have sound holes visible, if the artist is putting that level of detail into the painting.[6] Similarly, harps show background through the strings if the artist painted sufficient detail.
[translated to English from Spanish] There must have been two models of this type, judging from the images: one with a double row of strings and a sound box between them, with two soundboards, an instrument that was played in the same way as the harp...and another simpler one, with a single plane of strings under which a sound box or simply a plank ran...
a copyiest...complained that the ancient ten-string psaltery had been adopten by musicians and actors, who had...increased the number of strings...and given it the barbarian name 'rotta'...
[prior to the 13th century] its images raise doubts, since there are times when we do not know whether we are in the presence of a harp in which the three sides of its outline are straight, that is, a chordophone without a sound box parallel to the strings, a symbolic psalterium or an authentic harp-zither.