Watch the Pedaling Piano online guitar lesson by Matthieu Brandt from Guitar Lab: Triads and Hendrixian Double Stops
Although playing triads can be approached systematically, you always have to keep using your ears. Finding a spot in the backup that feels right for the song and creating an arrangement that works can be tough. If need be, record yourself and listen to what all the other players are laying down.
As a backup player you have a choice of how much you support the groove versus how much you weave your parts around the other grooves. If your chords, triads, doublestop licks and single line riffs rhythmically coincide with whatever the other players are laying down, you’ll intensify the groove. If you are going to fill up the holes that those players are leaving open, you’ll stand out more, opening up the possibillity to rhythmic interplay between the guitars or the guitar and keyboard.