There he scored TV movies for ABC, CBS, A&E, the Hallmark Channel, and the SciFi Channel. He wrote arrangements for recording sessions of singers Christopher Cross, Michael Bolton, Renee Olstead, Nancy Wilson, and Paul Anka. But even in Los Angeles, Walden kept on working occasionally for German TV or album projects, incl. Till Brönner, Al Bano, and David Hasselhoff. In 1999 he founded his own big band, the Chris Walden Big Band, which consists of Los Angeles based studio musicians. With this band he recorded three albums, of which the first one garnered two Grammy nominations in 2005. The band frequently plays in and around Los Angeles. As a conductor Walden led numerous symphony orchestras in concerts and recordings all over the world, including the New Mexico Symphony, Dallas Symphony, Columbus Symphony, National Symphony, West Australian Philharmonic, Munich Symphony, and the Slovak Radio Orchestra. In 2007, during the 3-month strike of the Hollywood screenwriters, Walden composed his first major concert work, "Symphony No.1 - The Four Elements". The recording with the Hollywood Studio Symphony which Walden conducted earned two Grammy nominations in 2008. In recent years Walden has been working as an arranger for "American Idol" since 2007. He also arranged for TV appearances of Faith Hill, Christina Aguilera, Katie Holmes, Aretha Franklin, Yolanda Adams, Melissa Etheridge, and many more. In 2009 he arranged the National Anthem for Jennifer Hudson's performance at the Super Bowl XLIII. In 2015 Walden served as conductor and arranger for the 38th Annual Kennedy Center Honors on CBS, in 2019 he was appointed lead arranger for the Academy Awards on ABC. So far Walden's works encompass 40 feature and TV films, more than 100 episodes of TV series, and more than 1500 arrangements for big band or symphony orchestra. In addition to more than 100 albums for which Walden arranged, composed, and produced, the following are Walden's albums under his own name: