With Purcell and Battista, Keller was likely to have taught keyboard in the proposed Royal Academy. He was among the many international musicians who resolved in England at the moment, the past due seventeenth hundred years, and left only one time, 1694, to go to Holland. Keller would frequently perform in London within the harpsichord and even though he passed away young added his “Compleat Technique” for the thoroughbass. It had been not released during his existence but was prepared. It had been the first function of its kind in Britain since Locke’s “Melothesia.” Keller’s “Technique” included not merely the teaching on thoroughbass but also guidelines for tuning the harpsichord and extemporaneous bass methods over created passages. Compositions by Keller included sonatas, airs, and preludes frequently for wind tools reflecting his German history and his fascination with composing for the orchestra of Princess Anne of Denmark. This orchestra included the trumpeter John Shoreline as well as the players from the recorder, La Tour and Paisible.