Since the 1960s, the electric bass has been the standard bass instrument for rock and roll, jazz fusion, heavy metal, country, reggae and pop music.Some fine basses, many of which were probably converted from their original form in tothree- or later four-string instruments, date from the late 16th century and early 17th. Anotable three-string bass, originally built as such, is that by Gasparo da Salò, owned by Dragonetti and now in the museum of St. Mark’s, Venice.