Which is better: 4- or 5-string bass? | Guitar World
Wholesale Musical Instruments Mahogany Body Neck-Through 5 String Electric Bass Guitar/4 String Bass Guitar - China Guitar Electric and Bass Guitar price | Made-in-China.com
4 String Vs. 5 String Bass – Differences Explained – Tone Topics
Advantages Of A 5 string Bass (you can't do these on a 4 string)
Choosing the Right Bass Guitar, Part 1: Four-String or Five-String?