Ancient Roman musical instruments.. Testudo or lyre of Amphion (1,2), lyre held by Terpsichore (3), psaltery (4), triangular harp or Trigonium (5), Abyssinian testudo (6), Etruscan 6-string lyre (7), lyre (8), Egyptian systrum (9) and richly ornamented lyre. Copperplate engraving by John Lee after an illustration by Strange from Abraham Rees' Cyclopedia or Universal Dictionary of Arts, Sciences and Literature, Longman, Hurst, Rees, Orme and Brown, London, 1820.