Why do I sometimes think I've heard a song before, even if it's the first time?

I wound up asking my sister about this who is a musician herself. Her theory is that a lot of mass marketed songs have what they call four chord sequences, which means the 吉他 and/or 钢琴 play just four chords in a particular sequence through the entire song, minus the occasional solo.

It's quite likely that there are a few songs out there with very similar four chord sequences.

Same key, similar rhythms...

Probably because it sounds like another one? Maybe 你 heard it in the background of your life and didn't realize it lol?

Maybe 你 heard it in a dream? That happened to me once and I googled the lyrics and found a real song. It was pretty cool.

it's called the mandela effect. it happened to my friend when he slept with a real life woman because he is so used to 日本动漫 body pillows

Worse yet man, i once started off playing a simon and garfunkle song on my guitar, but them somehow ended with joy division. That was a fun day

it happened to me before. On this song:

It only happened to me with this song before. Otherwise I only had this with songs, I know from many years ago.

Because a lot of 流行的 songs are basically the same song written 由 a different artist.