Something a lot of great players have a good handle on is playing chords on the bass but it doesn't get discussed much and there's very little specific instructional material out there. Mike Dimin's books The Chordal Approach and Invalid Link Removed are the only ones I can think of and are well worth checking out.
Recently I discovered Three-Note Voicings And Beyond by Randy Vincent. It's written for guitar but takes a very clear approach to understanding the notes defining the sound of a chord and voicing them in a sparse way that works incredibly well on the bass. Not only is it helping me voice chords that are usable on the bass it's taking my understanding of harmony and voice leading to a higher practical level which is starting to show up in my single note lines. For bass players that don't play a chording instrument developing a hands on approach to harmony can be difficult. This book goes a long way to addressing that issue. Highly recommended.
Recently I discovered Three-Note Voicings And Beyond by Randy Vincent. It's written for guitar but takes a very clear approach to understanding the notes defining the sound of a chord and voicing them in a sparse way that works incredibly well on the bass. Not only is it helping me voice chords that are usable on the bass it's taking my understanding of harmony and voice leading to a higher practical level which is starting to show up in my single note lines. For bass players that don't play a chording instrument developing a hands on approach to harmony can be difficult. This book goes a long way to addressing that issue. Highly recommended.