I'm echoing earlier posts, but this is what has worked for me:
First: KNOW the bass part. By this I mean you should have it down so well that you can play it in the air with same fingerings (both hands) and approximate spacing (frets and strings). If you're not sure, watch yourself in the mirror playing air bass. If you can see yourself playing the bass - and not look down - that's a good test.
Second: FOCUS on the syncopated sections on a note-for-note basis. Don't guess at this; write out the lyrics and music if you can and identify where the lyrical notes are in relation to the bass notes. Sometimes this is all it takes to "get it."
You have to disconnect the rhythm of your body from the tone and phrasing in your voice. You are essentially going to be two musicians when singing lead. Of the two, the most important musician
visually is the lead singer, but the most important musician
musically is the bassist.
The lead singer MUST keep eye contact with the audience as much as possible but the bassist MUST stay in the pocket with your drummer.
So, which one is more important? Put another way, which one will an audience tolerate more? Frankly, a sloppy bassist is less obvious than a sloppy singer.
So, learn that bass part first. Make sure that it's solid and undeniable and that your bandmates can count on you to nail it. Then, work on your singing and make it the most important thing you do. Your bassist in you will do just fine.
Here are some songs that have been the most challenging for me, if only for small sections in a few cases. I think these would be good exercises for any singing bassist.
- Jenny/867-5309: The bass line has a lot of syncopated beats. For me, this was just a matter of getting it locked down. The end of the fourth verse ("I tried my imagination, but I was disturbed") is sung in triplets, but seemed easy once I had my bass pattern locked in.
- Vertigo: Third verse ("I can't stand the beat...") The lyric meter changes from the first two verses and doesn't follow the bass meter. For me, it made it very challenging to keep the bass line going and not fall behind. I had to eventually break it down syllable/note for note and compare to the bass line.
- Interstate Love Song: DeLeo laid down a great line in the intro/chorus. However, trying to sing it like Weyland - especially on "you li - ed" - was very difficult for me. I did not get a handle on this until I committed to nailing and KNOWING the bass line (which was my real weakness) and then also breaking down the sections note-for-note on both the lyrics and bass.