Guitar - Level 2 - Digital Download SKU: A0.1144704 By 2015 Tonation. By Alex Tamposi, Sierra Deaton, and Toby Gad. Arranged by Arr. Neda. Pop. Guitar Tab. 3 pages. Ed.CAL #745039. Published by Ed.CAL (A0.1144704). Little Do You Know by Alex & Sierra in C (Original Key) for Guitar Guitar Sheet Music with Lyrics, Chords & Guitar Tablature.