You join Music Week as we interrupt Jared Leto at a moment of upheaval. Even if he wasn’t scrambling to pack his bags in order to make a flight, the perennially in-demand star probably has a little less time at his disposal than normal right now.

Currently, his band, Thirty Seconds To Mars – completed by his brother/drummer Shannon Leto and guitarist Tomo Milicevic – are in the middle of their European arena tour. Three nights ago he was performing in ...