The C major chord is one of the first chords most guitar learners are taught, built from the notes C, E and G and played across the open strings on a standard tuned guitar. Short recordings of single chords like this one are shared online as reference tones, sample hits and editing assets, allowing creators to check pitch, demonstrate fingering or add a realistic guitar sound without recording it themselves. Its lasting popularity comes from that simplicity and versatility across lessons, covers and everyday video edits.