No matter how many different visual aids are available on stage, there's nothing better than the worship leader's human memory for song lyrics. As far as possible, I believe in singing from memory and use any visual aid for backup purposes alone in case I forget that occasional line.
Depending only on external visual aid somehow makes the worship leader/singer seem a bit ineffective. Because, if the lyrics are memorized, the worship leader/singer is free to close his/her eyes or look confidently at the congregation and better connect with the people.
So here are 4 tips for memorizing worship song lyrics:
1. Repetition, repetition and repetition - really, there's not much of an alternative. Sing the song again and again and again until they refuse to go away. Longer the song, greater the number of repetitions.
2. Make a play-list of the next upcoming worship session set list and load it into every possible music player you access regularly - CD/USB or PC at home, iPhone or any other mobile device, laptop/netbook, car stereo when on the move etc. Listen to the play-list regularly (as in many times a day) and sing along each time.
3. At every practice session (personal or group), sing the whole song and repeat the verse/chorus that is giving the most trouble.
4. Sing the song silently at any available time. You must actually 'hear' the song in your head while doing this.
Hope these tips help you.
Can you share some tips to memorize song lyrics?