 Another text associates Hippasus with Lasus of Hermione in an attempt to demonstrate the correspondence by filling vessels with liquid in the appropriate ratios. It is less clear whether this experiment would have worked as described (Barker 1989, 31–32). Lasus was prominent in Athens in the second half of the sixth century at the time of the Pisistratid tyranny and was thus probably a generation older than Hippasus. There is no indication that Lasus was a Pythagorean and this testimony suggests that the discovery of and interest in the mathematical basis of the concordant musical intervals was not limited to the Pythagorean tradition. Lasus and Hippasus are sometimes said to have been the first to put forth the influential but mistaken thesis that the pitch of a sound depended on the speed with which it travels, but it is far more likely that Archytas originated this view. In the later tradition Hippasus is reported to have ranked the musical intervals in terms of degrees of concordance, making the octave the most concordant, followed by the fifth, octave + fifth, fourth and double octave (Boethius, Mus. II 19).