What is the note found on the 4th fret of the 1st string?

The note found on the 4th fret of the 1st string, which is the high E string on a guitar, is G#. When you start from the open string, the notes on the 1st string progress as follows: open E, 1st fret F, 2nd fret F#, 3rd fret G, and finally, the 4th fret gives you G#.

Recognizing the notes on the fretboard is crucial for understanding melodies and improvisation. In terms of intervals and keys, G# is a critical note, especially in the context of specific scales and chord progressions. For instance, it is the root note of the G# major chord and can also function as the leading tone in the A major scale.

Understanding the placement of notes along the fretboard aids in quickly identifying any note without relying on tablature, bolstering your overall guitar proficiency.