London: Randall & Abell, 1767. composer]. JENNENS, Charles, [contributor]. Messiah an Oratorio in Score. As it was Originally Perform'd... To Which is Added His Additional Alterations. London: Randall & Abell, 1767. Full Description: HANDEL, George Frederick, [composer]. JENNENS, Charles, [author]. Messiah an Oratorio in Score. As it was Originally Perform'd.......