The debate over whether streaming services should have a free option has heated up, with Ministry of Sound's Lohan Presencer (pictured) and Sony Music chief Doug Morris opposing the view of Beggars' Martin Mills, Glassnote's Daniel Glass and Kobalt CEO Willard Ahdritz.

Presencer says there should be no free option for streaming music services. The model turns what would usually be "casual paying consumers of music" into "browsers", he said, speaking during an MMIX panel at Mobile World ...