Percussion Ensemble - Level 1 - Digital Download SKU: A0.881293 Composed by Harvey Minchin. Standards. Score and parts. 11 pages. Harvey Minchin #3555357. Published by Harvey Minchin (A0.881293). Three's The Key was written for 7 Buckets - from small plastic sand buckets to large storage tubs or plastic garbage can - drums can also be used from small toms to the bass drum. Written in the 3/4 time signature, Three's The Key uses quarter and eighth notes and rests. This piece is for beginner elementary or middle school percussion groups and can be performed by percussion ensembles or as a percussion feature for any school concert. It is also great for group lessons.