In 2013, he mixed the EP "El Encanto" of Lantana and produced two of the songs of the album, also playing some of the synthesisers, bass and guitars.

Together with Molko, he is credited as co-author on every Placebo song to date (except "Ashtray Heart" from Battle for the Sun) and co-produced Black Market Music and some b-sides.

As the music was coming together, Olsdal and Amen did DJ work under the Hotel Persona name in such locations as Milan, Paris, London, Barcelona and Rio.

Their debut album In the Clouds was recorded and mixed in London, Madrid and New York over two years and features a wide array of additional vocals from various artists including Brian Molko, Samantha Fox, Miguel Bosé and Alaska of Fangoria.

So, they incorporate a string quartet (and other more usual instruments) in their electro creations and during their concerts, creating an experimental aspect to their collaboration.

[9] In these two albums, they highlighted feminine voices as Margret Rang (Vök), Helen Feng (Nova Heart), Cuushe, Julienne Dessagne (Fantastic Twins), Caroline Devine, Katrína Mogensen, Soleil and Alissa Janine Wollman.

During the Meds era, he also used an Epiphone Flying V Bass for live performances of "Nancy Boy", "Come Home" and other occasional songs (mostly rarely played songs from the first album), which appeared on the "Infra-Red" video, although this guitar was smashed by Olsdal at the end of their 2006 Reading Festival set.

In Hotel Persona live shows he mostly uses a Fender Telecaster also used when performing "Scared of Girls", "Slave to the Wage" and "Evil Dildo".

In the early years (1994–1996) he used Boss bass pedals when playing live, but this practice ended after Bill Lloyd became a full-time touring member.