He added one or more strings to the lyre, whereby he incurred the displeasure of the Spartans and Athenians (E. Curtius, Hist of Greece, bk.
He composed musical works of a mythological and historical character.
Fragments of Timotheus' poetry survive, published in Denys Page, Poetae Melici Graeci.
A papyrus-fragment of his Persians (one of the oldest Greek papyri in existence), discovered at Abusir has been edited by U. von Wilamowitz-Mollendorff (1903), with discussion of the nome, meter, the number of strings of the lyre, date of the poet and fragment.
Rabelais implies that Timotheus believed other musicians to have merely inculcated bad habits.