In early 2011, Hauser recorded an album with fellow Croatian Damir Urban. The album, the self-titled Urban and Hauser, was released in the summer of 2011. Also in the spring of 2011, he recorded an album with Croatian pop star Oliver Dragojević. The album, Noć nek' tiho svira, was released in October 2011. Also in 2011, they performed together in Pula. That fall, along with fellow 2CELLOS member Luka Šulić, he began touring as a member of the Elton John band. Since then, he has performed with the band hundreds of times, on tour all around the world, and in Las Vegas, Nevada, in the Million Dollar Piano concert performance at the Coliseum at Caesar's Palace. In November 2011, he released another classical album: Brahms, Beethoven & Bruch for Clarinet, Cello & Piano, again with Ms. Misumi, and clarinettist Leslie Craven.
Under the name 2CELLOS, Hauser and Šulić recorded an album with Sony Music Entertainment, which was released in July 2011.