[1] When he was nine years old he gave his debut at the Festival Kissinger Sommer,[2][3] and by the age of 12, Garrett began working with the distinguished Polish violinist Ida Haendel, often traveling to London and other European cities to meet her.[9] At the age of 13, Garrett recorded two CDs, appeared on German and Dutch television,[10] and gave a concert in the residence of the President of Germany, the Villa Hammerschmidt.[7] In April 1997, aged 16, he played with the Munich Philharmonic Orchestra under the direction of Zubin Mehta in Delhi and Mumbai in concerts marking the 50th anniversary of India's Independence.[14] Two years later, Garrett played with the Berlin Radio Symphony Orchestra under the direction of Rafael Frühbeck de Burgos, and was hailed by critics.In Autumn 2007, Garrett was chosen by the Montegrappa firm (whose items are distributed by Montblanc throughout the world) as an ambassador for the launch of the new pens from the Tributo ad Antonio Stradivari collection.On 11 October 2020, Garrett performed the German national anthem at the Formula 1 2020 Eifel Grand Prix as part of the opening ceremonies.