Also in 2004, he also wrote the song "Här stannar jag kvar" for Sandra Dahlberg for Melodifestivalen 2004 and appeared with her during the show.

In 2005, The Wallstones took part in Melodifestivalen 2005 with "Invisible People" The song also reached number 6 on the Swedish Singles Chart.

Exile's song "Rising Sun", written by Becker, was a hit in 2011 in Japan, reaching number 1 on the Oricon chart.

He was one of the winners at the Japanese JASRAC Foreign Work Award alongside Sharon Vaughn and the Thott Brothers.

As well as being a main vocalist with Star Pilots, in 2011 Petter Isaksson co-directed with Jonas Rosin and Roland Möhle a Swedish version of Jesus Christ Superstar.

The single included backing vocals by Marcus Öhrn and Sussie Ottebring with Lee Farmer on guitar, and a remix of the track by Punkstar.

With Sandra Dahlberg, he has hosted the program Prinsessan Sandra och Prinskörven and has long cooperated with other Star Pilot member Emilio Perrelli with artists like EMD, Linda Bengtzing, Darin, Carola Häggqvist, Rebound, Jasmine Kara, Ola Svensson, Danny, September, Elin Lanto, Lovestone and Sibel.

Emilio Perrelli born April 18, 1975, in Spångavägen, besides his membership in Star Pilots is a choreographer and together with Mathias Singh has worked with EMD, Danny Saucedo, September, Rebound, Carola Häggqvist and Darin.