LOS ANGELES | Much of the virtuosic guitarist Ty Segall’s prolific career has been characterized by a sludgy, almost primal, intensity. But his 16th LP crystalizes a new, less-aggressive era for the indie rocker, as he trades in his additive synths for strings and horns — all while maintaining his singular garage-psych.

“Possession” isn’t Segall’s first album to reel in his trademark heaviness. Following the release of his 2021 record “Harmonizer” — the apex of a Black Sabbath-inspired, electronics-assisted sound he had for years — the singer, songwriter and multi-instrumentalist has mellowed out and gone more analog in the myriad solo projects he’s released since.

There was his 2022 mostly acoustic album, “Hello, Hi,” as well as his instrumental “Love Rudiments,” an avant-garde, percus

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