body: So just wondering, will it be legal to use a few lines of song lyrics as your service/company's slogan? For example, "You just gotta ignite the light, and let it shine" (Katy Perry's firework) as a slogan for something like fund-raising platform? Like maybe a whole song is copyrighted (not familiar with copyrights on songs), but is it possible to legally use part of it if you like the meaning?
  
  
  If can, how about adding `TM` or registered sign next to it? Since most slogan has it.
  
  
  
title: Song lyrics as (trademarked) slogan