‘We played the flute for you, yet you did not dance; ¹  we wailed in mourning, ²  yet you did not weep.’

It is similar for lifeless things that make a sound, like a flute or harp. Unless they make a distinction in the notes, how can what is played on the flute or harp be understood?

They are like children sitting in the marketplace and calling out to one another, ¹  ‘We played the flute for you, yet you did not dance; ²  we wailed in mourning, ³  yet you did not weep.’