The instrument belonged to the mandolin family that instead of being strung with 4 double strings tuned like the†violoncello, was given an extra highest string pair. The tuning of the liuto cantabile (or†liuto moderno†as it was also named) was: CC-GG-dd-aa-e'e'. This bass variant of the Mandolin family was created by the famous Neapolitan luthiers of the†Vinaccia†family in the late 19th Century and perfected by†Raffaele Calace. It was mainly used a bass instrument in the Classical†mandolin†quartet (Mandolin I and II, Mandoliola/mandola and Liuto cantabile).
A number of solo works was written for it, though eventually it was replaced by the regular mandocello. It is however, still being used.
Calace Liuto Cantabile Fret Scale: 61 cm (24")