(b Bonn, 1784; d Frankfurt, 1838).
Ger. pianist, composer, and conductor, son of Franz Anton Ries. Pupil of his father and of Beethoven in Vienna 1801–5. Toured Europe and Scandinavia as pianist. Lived in London 1813–24 as pianist and teacher. Worked in Ger., esp. Frankfurt and Aachen, from 1824. Cond. at 8 of Lower Rhine orch. 1825–37. With Wegeler, wrote Biographical Notices of Beethoven, 1838. Comp. 3 operas (incl. Die Räuberbraut, 1828); 2 oratorios; 18 syms.; 9 pf. concs.; 26 str. qts.; 128 vn. sonatas; 14 pf. sonatas, etc.