Double bass the "old" German method sounded an octave below where notation except in the treble clef, where the music was written at pitch. The double bass is generally tuned in fourths, in contrast to other members of the orchestral string family, which are tuned in fifths (for example, the violin's four strings are, from lowest-pitched to highest-pitched: G-D-A-E). The standard tuning (lowest-pitched to highest-pitched) for bass is E–A–D–G, starting from E below second low C (concert pitch). This is the same as the standard tuning of a bass guitar and is one octave lower than the four lowest-pitched strings of standard
Violone with the violin, but can't necessarily be described as genuine violin family instruments because their tunings, proportions and/or construction issues may be at odds with the other sizes. In the Renaissance and Baroque era and even in the 2000s, there are players who changed or adapted their instruments in unique ways. In this category we might find bass viols that are tuned in E (instead of D), or where the bottom string is tuned an extra step lower, to a C (a pitch found in numerous Baroque works). Or we might find a contrabass/double bass tuned in fourths, but with