AIM chairman and chief executive Alison Wenham will join a five strong panel with Hargreaves, who expects to close his call for evidence two days later.

In the meantime the industry has been busy drawing up its responses to Hargreaves, who has asked for input and hard data to demonstrate how the music industry has adapted to growth in the digital age.

Many executives are worried that Hargreaves, who has visited the US during his evidence gathering phase, wants to ...