String Trio Cello,Violin - Level 4 - Digital Download SKU: A0.1470390 By Avicii. By Aloe Blacc, Avicii, and Michael Einziger. Arranged by Isabel Williamson. Chamber,Contemporary,Pop,Wedding. 19 pages. Isabel Williamson #1048109. Published by Isabel Williamson (A0.1470390). The hit song 'Wake Me Up' by Avicii arranged for string trio (two violins and cello). This imaginative, varied and highly effective version captures the energetic spirit of the orginal song in a detailed, professional and fun-to-play arrangement - ideal for weddings.