So I listen to a whole bunch of Kpop and Regular songs also some Anime openings and Vocaloid but sometimes I find songs that sound alike and other times I find songs that I know I have heard the tune before or sound like something but I can't remember what! Some examples of songs I find similar are

-Night Changes by One Direction and Changes from Shrek 2
-Melissa by Porno Graffiti(FMA opening 1), Ways to Say Goodbye by Train and The Phantom of The Opera from well...That
-Dead leaves by BTS and They Never Know by EXO

But what bugs me the most is when I find a song that I know I have heard the tune before but I just can't remember the song. Songs like:

-So What by BTS (My mom says it sounds like Rihanna's Don't Stop The Music and I can see where she is coming from but I was thinking of a different song)
-Pied Piper by BTS (one part of it sounds like a One Direction song but I can't find it for the life of me)

Point is why don't you share songs that sound similar in your eyes or put a song you know you have heard the tune of and maybe I can help!