Did you know your iPhone/iPod software can display lyrics for songs?
Adding lyrics to your songs
You just need to make sure your mp3 files have “lyrics property” populated.
On your computer, open iTunes, right click on a song and choose “Get Info”. You should see this dialog:
Now click on “Lyrics” tab and add your text.
You can copy and paste lyrics text from websites, such as:
(Also, if you look around you’ll find jailbreak iPhone 5 software that will automatically add lyrics to all of your songs)
How to view lyrics on iPhone:
Once you’ve added lyrics to your songs and synced your phone, here is how you view it: when the song is playing, simply tab the screen once and it will overlay lyrics over album art!