Slim Jim Phantom from the Stray Cats and Jonny Bowler from the Guana Batz flew from Los Angeles to join The Knockouts on stage in a special sold-out show that celebrated Johan Frandsen's 30th birthday.

[1][2] The European summer started with a performance with Brian Sezter on the premiere night of his tour at the 10-year celebration of the Azkena Rock Festival[3] on 25 June, Vitoria-Gasteiz, Spain to crowds of over 50,000 people, then onto sold out dates throughout Germany in Berlin, Hamburg and Cologne.

The Knockouts frontman Johan Frandsen joined Brian Setzer and Slim Jim Phantom on stage with a special rendition of "Seven Nights to Rock".

Frontman Johan Frandsen has also played with members of the Stray Cats, Guana Batz, Mad Sin and gave the Swedish rockabilly band The GoGetters an injection of energy in over 300 gigs.

After devouring two year's worth of gigs, and with a different way of looking at the Swedish punk rock scene, and following from the success of Skyline Supernova, in 2003 the trio went onto solidify its sound with the introduction of longtime drummer Ted Jergelind[4] In early 2004, they went into the studio and recorded the four track EP self-titled The Knockouts.

Recorded October 2007 and released 1 February 2008 the band supported the new album with a Europe and US tour that included planned dates in Sweden, Germany, Czech Republic, Finland, and the West Coast of the United States.

This album received radio plays and reviews; ... the catchiness of the beats and melodies grab you, the lyrics hold on tight and refuse to let you go ...[8] The official single, "...'Days Long Gone" hurtles out of the speakers with a confidence and energy that tells me everything I need to know about this record and that is it's going to compete and there's a strength in the outstanding playing and songwriting that places this Scandinavian three piece right at the top of the pack..."[9] The albums also featured Kevin McKendree on piano on the song "Stars of Us".

[10] In 2010, Frandsen began an endorsement deal with TV Jones guitars as a featured artist on the website with Brian Setzer, Chris Cheney and Billy Gibbons.