 Every summer since 1999, he has put on an annual fundraising concert for High Hopes Head Injury Program, a non-profit organization in Orange County, California that works with people who have suffered traumatic head injuries.Marienthal occupies the lead alto chair of Gordon Goodwin's Big Phat Band, playing alto saxophone, soprano saxophone, flute, and piccolo.In 2012, Marienthal released the album "It's Love", produced by guitarist Chuck Loeb, who also appears on the tracks.