Derek Trucks, Charles Lloyd and the Language of Improvisation
Where is the boundary between rock and jazz when virtuosos are involved?

Two of my favorite albums of 2017 are the Tedeschi-Trucks Band’s Live From the Fox Oakland and Charles Lloyd’s Passin’ Through. Both guitarist Derek Trucks and saxophonist Lloyd have a history of straddling the boundary between rock and jazz, and both of their albums are built around improvisation. And yet it’s easy to identify the former as a rock record and the latter as a jazz project. Why is that?
It’s because rock improvisation is not the same as jazz improvisation. When you listen to Trucks scattering notes over the chugging beat of Eric Clapton’s “Keep on Growing” on the new album, you can’t help but be impressed by the way he multiplies the melody notes and twists them into new, exhilarating shapes. But he never departs from the changes and never gets too far from the vocal line.
By contrast, when Lloyd solos on the title track from his new album, everything is up for grabs. The tune, the chords, the beat, the sounds—it’s all shifting all the time. The lead improvising instrument can suddenly shift from Lloyd’s saxophone to Jason Moran’s piano to Reuben Rogers’s upright bass to Eric Harland’s drum kit and back again. And yet there is just enough information in the form of melodic scraps from the theme and new riffs to tie the whole thing together and make the thrilling spontaneity tell a story.
Charles Lloyd (Blue Note Records)
If we think of the five variables available to an improviser—melody, harmony, rhythm, phrasing and timbre—rock soloists are more likely to keep the chord changes and the groove fairly steady while varying the tune, texture and syntax, while jazz improvisers are more likely to mess with all five. And rock instrumentalists are less likely to venture very far from the song’s original melody and changes, while modern jazz players are willing to leave the original template so far behind that it becomes a faint memory.
This is not to say that one is better than the other. While it’s true that jazz improvisation often requires more technical skills, those chops don’t necessarily translate into a more satisfying listening experience. In some ways, it’s more difficult to come up with something original within the tight parameters of rock improvising than in the wide-open spaces of jazz soloing. On the other hand, it can be just as daunting a challenge to forge an emotional connection amid the virtuosic demands of jazz.
Trucks and Lloyd prove how each approach can be done right. Trucks joined his uncle Butch’s group, the Allman Brothers Band, at age 20 in 1999, and his slide-guitar work soon earned comparisons to the group’s original guitarist, the late Duane Allman. In 2010, Derek and his wife, the singer-songwriter Susan Tedeschi, merged their two bands into one large horn ensemble, modeled on the big show bands that B.B. King and Aretha Franklin once carried. The new live album from the Tedeschi-Trucks Band demonstrates how exciting that format can still be.