Here are some excerpts from conversations I have had with singing bassists concerning the reasons they like to play bass and sing:

My choosing the bass was driven by the desire to convey my song ideas to the band.
The frequency and the sound of the bass are so important, its such an emotive frequency, the low-end, without people even being aware of it.
I love the bass-guitar as an instrument…. because I always think of all the parts in a piece of music. Its all happening at the same time for me….its quite a natural (choice of instrument).
-Royston Langdon, Singing-Bassist of Spacehog

Being a singing songwriting bass player is definitely a good place to get in the band, especially if you have some ideas that you want to impose on some other players, … its quite a position of power.
-Steve Kilbey, Singing-Bassist of The Church

Chris Ballew, Singing-Bassist from the Presidents of the United States of America, offers the following answers:

Royston Langdon, Singing-Bassist from Spacehog, offers the following advantages he sees in being a Singing-Bassist:

Equipment
These are mentioned as pre-requisites. Any functioning electric bass-guitar will do for playing bass while singing.

1. Electric Bass-Guitar: Custom Wannabe Fender P-Bass, including built-in Detuner (E to D):
2. Electric Bass-Guitar: Tokai Jazzsound Fretless
3. Acoustic Guitar: Taylor 210CE
4. Metronome: Korg MA30
5. Tuner: Boss Chromatic Tuner TU-3
6. Digital Recorder: Zoom H4N
7. Free audio analysis software: Audacity Software

Experience
Singingbassist.com is the baby of a songwriter with one album in the can, and who has played several concerts as a Singing-Bassist. SB has also played many concerts as a bassist in a four-piece band rock-band in Germany.

The methods detailed on this website are intended for musically autonomous instrumentalists who can sing. It is assumed that the reader can obtain his/her music by ear or by notes.