How can I use songs to help my confidence when I can't listen to them?

There are a few songs that make me feel confident about myself, such
as:

firework (katy perry)
pretty/unpretty (glee)
one step at a time (jordin sparks)

When I'm at places like school, I want to feel more confident but I
can't listen to my i-pod or anything like that. Is there any way to
remind myself about the song lyrics when I'm anywhere?