In 2008, Lledo moved to Los Angeles upon being invited by film composer Harry Gregson-Williams, and did additional music and arrangements for several major films, including X-Men Origins: Wolverine, Prince of Persia: The Sands of Time, DreamWorks' Shrek Forever After, Ben Affleck's The Town, Cowboys & Aliens, and the Tony Scott films The Taking of Pelham 1 2 3 and Unstoppable.

Lledo has scored the four-time Emmy Award winning Civil War film Gettysburg (exec.

produced by Ridley Scott and Tony Scott), the horror/thriller Darkroom starring Kaylee DeFer and Elisabeth Röhm, as well the animated fantasy TV series Legends of Chima which received widely critical acclaim and was named one of the best scores for television in 2013 by several reviewers – winning Tracksounds Cue Award for Best Television Score.

[2] In 2018 Lledo and composer Mikkel Maltha composed the score for the feature film The Purity of Vengeance (Journal 64), the fourth installment of the Department Q film series directed by Christoffer Boe based on the successful books by Danish writer Jussi Adler-Olsen.

[4] Lledo's credits also includes the TV series Den Som Dræber (Those Who Kill), A Happy Day directed by Hisham Zaman, A Taste of Hunger (Smagen af Sult) starring Nikolaj Coster-Waldau (Game of Thrones) and Katrine Greis-Rosenthal (Lykke-Per), the TV series Face to Face (Forhøret) starring Ulrich Thomsen, Lars Mikkelsen, Trine Dyrholm and Nikolaj Lie Kaas as well as the Danish nature series Wild and Wonderful Denmark (Vilde Vidunderlige Danmark), which was recorded and later performed live in concert by the Danish National Symphony Orchestra.