Rachel Eckroth Death, uncertainty, love, change, hope — grand ideas abound on Rachel Eckroth’s new album When It Falls. As do bold musical statements: Perhaps better known as a jazz keyboardist, Eckroth here evokes the aura of the late David Bowie, experimental rockers Can and perhaps a great, lost David Lynch soundtrack. “This is an evolution,” admits Eckroth. When It Falls, her third solo release, certainly marks a transformation: Featuring guitarists Derek Trucks and Doyle Bramhall II, drummers Matt Chamberlain, Gary Novak and Sterling Campbell, and bassist/producer/husband Tim Lefebvre (David Bowie/Tedeschi Trucks Band), the album explores sonic areas far removed from the singer’s early work. “The album I did before this was very jazzed out,” Eckroth says. “Tim helped get me into more sonic textures and using pedals and more outside gear besides keyboards.” (That expertise was one reason Lefebvre was recruited by Bowie and became an integral part of the late singer’s Blackstar album). And how was it working with her significant other? “It could go both ways,” she laughs. “I always loved what we made, but we could occasionally butt heads.” So it’s not Fleetwood Mac, but a few of the tracks on When It Falls do allude to their relationship (“We’d Be on Fire,’ “Walls” and first single “Dark Waters”).