I am a singer/songwriter and I write a lot of songs... When you begin writing you have to start with the hook... The hook is the catchy part of every song that people remember the most and it is usually part of the chorus...
Most of my songs are kind of depressing or on very deep topics but not all are and I can usually write a song about anything I can imagine...
I've had a hook written for about a year though, it is my favourite for some odd reason, but I have not written a song with it yet... I'm working on it, trying, believe me I am... But I haven't had any success...
So to get to the point, if I were to write a song the hook I would use is...
"I'm an angel, I am flying, hold me up with strings and hide them.
I'm not up, I am down, find my wings upon the ground."