Bass tuning

Fifths tuning (C-G-D-A)

Fifths tuning leaves the bass at C-G-D-A, the same notes and layout as a cello. Instead of fourths, the strings are a perfect fifth apart, which greatly widens the range.

The tuner opens already preconfigured; you only need to allow microphone access.

Strings and frequencies

How it sounds

Each string covers much more register, so you gain a tremendous low-to-high range at the cost of bigger left-hand stretches. It is a niche tuning, loved by players coming from the cello or after extreme range.

Styles and genres

Recommended string gauges

You need dedicated strings: the low C calls for a very heavy gauge and the high A a light one, an imbalance normal sets do not cover. Look for sets made for fifths tuning.

Tuning tip

Relearn your scales before playing for real: moving from fourths to fifths changes every shape. Start with one-octave scales on two strings to internalise the new geometry.