In 2004, Trine gets a break she has long awaited when theatre producer Anders Eriksen from Norway contacts her in LA to offer her a part in a new show called “80-tallet Beat for Bit” (The 80-ies, Beat by Bit). The show is performed by Torhild Sivertsen, Tom Sterri, Sturla Berg-Johansen and Trine Rein in addition to The Monroes as permanent guest artists. This will be a stepping stone towards a place in the entertainment business, and Trine resigns from her job as a limousine driver shortly after to go back to Norway. The show is a great success, and becomes Trines main source of income for the next two years in addition to opening doors for her into the music business. Her record company, EMI Records, release a greatest hits album, “The Very Best of Trine Rein”, in attempt to take part in Trine’s comeback as a live artist in Norway.
In the summer of 2005, Trine creates her own summer show to be seen at Trommøy outside of Arendal. The show is called “Sommerstemning med Trine Rein”, and is a feel-good type show with elements of music, poetry and short stories. The experience helps Trine really grow as an artist and a performer, and gives her new dimension in ways to communicate with her audience.
In 2006, Trine participates in a concert called “ABBA in Symphony” together with Tommy Kjörberg, Geir Rønning and Maarja-Liis from Estonia. The concert is held in Hjertnes Kulturhus in Sandefjord, and is seen by many.
The following fall, the four singers Trine Rein, Marianne Antonsen, Sigrid Brennhaug and Torhild Sivertsen get together with band leader Øystein Lund-Olavsen to plan and create a brand new show called “The Ladies Night”. The show is directed by Erik Ulfsby, and played through the fall/winter season of 2006 at Edderkoppen Theatre in Oslo. The singers are not entirely happy with the way the show turned out, and feels there is a distance between their roles on stage and the expectations of their audience. Due to this friction, the girls decide to take matters into their own hands, and re-direct their show. The new premier is a great success, and the show continues through the spring and summer of 2007 in various cities around Norway.
In the fall of 2008, Trine meets the love of her life, explorer, author and expert on wilderness, Lars Monsen. Monsen is an important addition to Trine’s life, giving her the support, stability and foundation she needs to begin creating a new solo album. With the exception of a Christmas tour in November/December with KOR-90 and guests, Trine Rein performs only a limited amount of live concerts due to the planning of a new album. In 2009, Trine is contacted by yet a new producer to participate in the celebration of Motown Records 50’ieth anniversary. A new show is created, and during the fall of 2009, solo artists Marianne Antonsen, Noora Noor, Knut Anders Sørum, Marvin Charles and Trine Rein performs gems from Motown Records on Edderkoppen theatre in Oslo with much success.