This song is stuck in my head, like a freaking ear worm 

Lyrics

Yesterday
All my troubles seemed so far away
Now it looks as though they're here to stay
Oh, I believe in yesterday

Suddenly
I'm not half the man I used to be
There's a shadow hangin' over me
Oh, yesterday came suddenly

Why she had to go, I don't know, she wouldn't say
I said something wrong, now I long for yesterday

Yesterday
Love was such an easy game to play
Now I need a place to hide away
Oh, I believe in yesterday

Why she had to go, I don't know, she wouldn't say
I said something wrong, now I long for yesterday

Yesterday
Love was such an easy game to play
Now I need a place to hide away
Oh, I believe in yesterday
Mm mm mm mm mm mm mm