Sebastian Hilli (born 20 May 1990 in Helsinki) is a Finnish composer.[1] Hilli studied composition at the Sibelius Academy and at the University of Music and Performing Arts Vienna with Lauri Kilpiö, Michael Jarrell and Veli-Matti Puumala.[2] Hilli's first orchestral work Reachings won the International Toru Takemitsu Composition Award in Tokyo in 2015[3] and was the selected work in the "composers under 30" category in the 64th International Rostrum of Composers in Palermo, Italy in 2017.[4] Hilli is the winner of the Gaudeamus Award 2018.[5] Hilli's orchestral work Snap Music was awarded the Teosto Prize in 2019.[6] Hilli's works have been performed by the Tokyo Philharmonic Orchestra, the Finnish Radio Symphony Orchestra and the Helsinki Philharmonic Orchestra.[7] Hilli's largest work so far is 45-minute-long Affekt, premiered by Helsinki Philharmonic Orchestra, a 250-member choir and conducted by Leif Segerstam in 2017.[