C# maj7sus4 on Double Bass

C# maj7sus4 spells C# – F# – G# – C. A bassline treats those notes as a hierarchy — root first for gravity, fifth for stability, then the third and any extensions for color — and the shapes below put each of them under your fingers on the Double Bass's EADG strings.

On the Double Bass this is a fingerboard map, not a fret chart — the marked positions are where frets would sit. Play the tones pizzicato or under the bow; with arco sustain even a two-note double stop carries like a full chord.

Start from the root, play the arpeggio until the sound of C# maj7sus4 is in your ears, then loop it against the progressions in C# so the tones become choices instead of charts.