In 2006, he was asked to join
TNT in
Oslo, Norway to replace their long-time vocalist
Tony Harnell who had decided to leave the band for both personal and professional reasons. The following year Mills sang on TNT's new album,
The New Territory, which despite high sales, was poorly received by several rock magazines, who it seems were somewhat taken aback by the new material. The band toured and gigged extensively throughout 2007 in Norway to support the record, including supports to
Ozzy Osbourne,
Skid Row and
Motorhead. Lasse Dale was also a progressive metal guitarist from Tromso in Norway, that enlisted Mills to write and record his debut album,
Screaming For Silence. Mills worked for many European artists between 2006 and 2010, namely Michael Voss and his 'Voices of Rock' project, Liberty 'n' Justice in the U.S., Torben Enevoldsen in Denmark, Frederic Hugues and Blackstone and Tor Talle in Norway. Charity involvement for the Autistic Foundation for Children in North Trondelag, also saw the release of a single, "Keep The Dream Alive", along with its associated video through NRK with vocalist, Siv-Anita Strickhert. In 2007, Mills also performed backing vocals on the debut album by the British band, Crimes of Passion. He has numerous credits for, and is in regular demand for, provision of backing vocals, and other recent outputs include The Andersson-Mills Project, China Blue, and backing vocals for Dante Fox in the UK and Norwegian rock outfit Winterstrain, appearing on their debut album
Return to the Mirror as well as
Shifting Sands. In 2008, Mills released a more metal oriented solo album
Vital Designs, which featured bass by
Morty Black, Oddvar Krogstad and
Victor Borge (TNT), guitars by Neil Hibbs, keyboards by
Shy's keyboard player Joe Basketts and drums by
Shy's drummer Bob Richards. Also appearing on the album was TNT member
Dag Stokke and Erik Ragno from China Blue. In the same year, he also began work with
Ronni Le Tekrø on their second TNT collaboration, which resulted in the album
Atlantis, featuring the songs "Tango Girl" and "Hello, Hello", which became regular tracks in their setlist for the following tour. In the winter of 2008, Mills joined the band Serpentine, replacing former singer Greg Flores. In March 2010, Serpentine released their CD
A Touch of Heaven on AOR/Metal Heaven in Europe and Marquee Avalon in Japan, gaining a glowing 92% review in rock magazine
Burrn! as well as hitting number 72 in the HMV Japan chart. Around the same period, Mills was commissioned to write and record an album for AOR Metal Heaven records in Germany, entitled,
State of Rock, with Robby Boebel from Nuremberg act, Frontline. Work was also completed on a more rock oriented TNT release for the end of the year,
A Farewell To Arms, which returned to the classic sound of the band and was well received by fans and critics alike. Just after the summer, it was reported that Mills had suffered a heart attack at an airport in Norway, which prompted the singer to announce his departure from Serpentine before the completion of his second album with the band. The album has since been completed. Serpentine moved quickly to recruit 24-year-old British vocalist Matt Black as his replacement, to allow the band to commence touring to support the
A Touch of Heaven album. The band's follow up,
Living and Dying in High Definition also received great support from the media during its late 2010 release. After a full recovery from his heart condition, at the opening of 2011, Mills had relocated to Norway to embrace the release of the latest TNT album and began touring to promote
A Farewell To Arms, which in Scandinavia, was titled
Engine. The change of album title for different territories was inextricably linked to his heart failure and consequent recovery. He consequently set to writing tracks toward a rock opera with Trondheim writer Andreas Nergard whilst touring Europe with TNT. Mills was also part of the Norwegian artist force supporting relief aid in Japan for their recent tragedies. After increasing unrest in the Norway camp, Mills quit TNT in August 2013, after over seven years, to satisfy his own artistic integrity and produce more solo material. == Later career ==