Musician David Bennett, who previously deconstructed several famous songs without a chorus, quite informatively explained how certain songs can sound good, even by only using a single chord throughout the whole song.
It is fair to assume that most songs you encounter will be making use of at least three chords, if not a lot more! But it is possible to write a song with only one chord, and, in fact, there are various styles of music that are actually quite prone to doing this.
Examples of this include “Running Through the Jungle” by Creedence Clearwater Revival, “Within You, Without You” and “Tomorrow Never Knows” by The Beatles, “Political World” by Bob Dylan, and “Who Do You Love” by Bo Diddley.
