Piano Solo - Level 3 - Digital Download SKU: A0.1103932 By Christopher Alexander. By Heinrich Isaac. Arranged by Christopher Alexander. Sacred,Traditional. Score. 8 pages. Christopher Alexander #707216. Published by Christopher Alexander (A0.1103932). The melody by Heinrich Isaac is given a calming nature that is most appropriate for Communion. With chime imitations and an arpeggiated accompaniment, this arrangement will resound with your congregation and create a graceful atmosphere at your next worship service.