step into the studio(начинать работу в студии по записи музыкального материала (Disturbed stepped into the studio after stepping off of the road and began work on a new disc – All Music Guide). sankozh)
go into action(Start work or activity. Example sentences: ‘They rob parked cars and have studied the habits of their targets before going into action.' ‘We talked for a while then moved into the living room and I went into action.' ‘Elliot went into action after local radio station Z – 99 announced the contest, which awarded a pair of seats to the show to the collector of the most grasshoppers in two days.' ‘The eight-strong police team went into action at 10 am and five people were arrested at the scene on suspicion of possessing drugs with intent to supply and were later released on bail.' ‘As a curious crowd gathered at the entrance to Central Park at Fifth Avenue and 60th Street, a team of riggers, steelworkers and Japanese art world figures went into action.' oxforddictionaries.comAlexander Demidov)
