Foskett became a fan of
the Beach Boys after he heard "
I Get Around" and became determined to meet
Brian Wilson. In 1976, he tracked down Wilson's house in Bel Air, which had the stained-glass window used for the cover of the Beach Boys album
Wild Honey. After knocking on Wilson's door, he was greeted by a friendly Wilson and quickly invited into his house as a guest. The two then kept in contact over the years. In late 1979, Wilson's cousin
Mike Love stopped by the Santa Barbara restaurant 1129, where Reverie was the house band. Love listened to Foskett and hired Reverie as the original incarnation of the Endless Summer Beach Band. The band toured with Love through December 1981, when Foskett replaced Brian's brother
Carl Wilson, who briefly left the Beach Boys to pursue a solo career. When Carl rejoined the Beach Boys in May 1982, Foskett was asked to stay to perform his falsetto parts, which he did until 1990. When Brian Wilson returned to touring in the late 1990s, he asked Foskett to help him assemble his touring band. Foskett was the musical director, appearing at every solo show Brian had performed, up until he departed from Brian's band. In concerts, Foskett provided lead vocals on several of Brian's songs, including "
Don't Worry Baby", "
The Warmth of the Sun" and "
Wouldn't It Be Nice" as well as others. Foskett has appeared as guitarist/vocalist/arranger on a majority of Brian's solo material, including
his version of Smile. In 2012, Foskett joined
the Beach Boys' live band on
The 50th Reunion Tour, and subsequently appeared on the studio album ''
That's Why God Made the Radio'' alongside the band, performing all of the falsetto vocal parts as well as other vocals on the record. Regarding his role in the reunion,
Al Jardine stated, "Jeffrey is invaluable to keeping the continuity between the various parts. He supports Brian in every possible way. He has Brian's confidence, and basically kind of makes it possible to have Brian Wilson on the road with us. [Without] that shoulder to lean on, I think it would be very difficult for Brian to tour. And I'm very grateful for that." Foskett was replaced by
Matt Jardine, who joined Brian along with his father and founding member Al Jardine on his tours. On May 15, 2014, it was announced that Foskett would be re-joining the Beach Boys as a permanent member of the touring band. Foskett also performed on Love's solo albums
Unleash the Love (2017) and
Reason for the Season (2018). In early 2019, Foskett took leave from the Beach Boys due to undergoing throat surgery. In late 2019, Foskett announced that he had been diagnosed with stage 4
anaplastic thyroid cancer in early 2018 and that his falsetto vocal range had heavily deteriorated as a result of several surgeries and treatments on his vocal cords. In addition, he said he would release his next album
Voices, which he said may be his last album as a solo artist, on November 22, 2019, though added that he would also continue as a live musician and possibly explore doing record production work. ==Other work==