Margarita started to play the violin when she was 5 years old. Ms. Krein is the recipient of a Career Grant from the Rachel Elizabeth Barton Foundation 2009/2010 and Joyce Dutka Arts Foundation 2010, Clementi Foundation Scholarship 2010. In summer 2009 Margarita became finalist of Summit Music Festival Mary Smart Concerto Competition, New York, and Conservatory Music in The Mountains Festival Concerto Competition in Colorado, USA. In 2010 Margarita won First Prize of American Protege International Competition in New York and also won Concert Festival International Auditions and performed twice at Carnegie Weill Recital hall.
Ms. Krein also became a concertmaster of International Chamber Soloists, music director of which is Dmitri Berlinsky.
During summer 2010 she performed at International Academy of Music in Italy, SUMMIT Music Festival in New York, USA, XXVI Gubbio Summer Music Festival, Umbria, Italy, winning Clementi Foundation Scholarship, International Music Festival in Rome, Italy. In the past few years she has participated in international festivals and projects like AURORA Chamber Music Festival, Sweden, EILAT Music Festival, Israel, London Masterclasses, United Kingdom, Chamber Music Festival in Italy, Summit Music Festival, American-Latvian Chamber Orchestra as a soloist, Conservatory Music in the Mountains, Colorado, United States, Pont-Aven Music Festival, France, „Sommer Musik Fest Rostock” in Germany, Orchestra Giovanille Italiana, ”Wings of Talents,” Latvia, “Noritis Young Violinists Festival” Latvia, Latvian music school competition where she got 1st prize, United Baltic Countries Orchestra and others.
In 2007 Margarita got grant from German-Latvian Cultural, Educational and Information Foundation. In the same year she won the 11th International Young Violinists Competition in Russia.
Ms. Krein gave concerts in Latvia, Russia, France, Italy, Germany, Estonia, Czech Republic, Israel, Sweden, Slovenia, UK and the USA. At the age of 17 she had her debut as a soloist with orchestra in the USA with Concervatory Music in The Mountains festival orchestra and later with Latvian-American Chamber Orchestra in Latvian Great Guild Hall (Philharmony Hall) during the Winter Festival. She has also performed at The Morton H. Meyerson Symphony Center (Dallas Symphony Hall), Roshong Hall and Fort Lewis College Concert Hall (Colorado), in Gold and White Hall of The Latvian Society in Latvia, as well as in Latvian Society of Boston, MA, Michigan, Minneapolis and New York, Teatro Comunale di Firenze, Italy, Latvian Opera House, Royal Academy of Music, London, Carnegie Hall Stern/Perelman Auditorium, Alice Tully Hall at Lincoln Center, solo recitals on Stradivarius violin in W.M.P. Concert Hall, New York, Wharton Great Hall at MSU, Liberty Hall in Hollywood Hills, Yamaha Piano Salon in New York, Latvian Mission to United Nations, New York.