Alex pall had a date planned with his girlfriend the other night, but he got stuck in the studio jamming with Chris Martin, so he had to stand her up. It’s not the kind of thing Pall does often, he says, because he likes to makemusic in the daylight hours, clocking out before sundown. “I treat it like a job,” he says. “I’ve had rappers be like, ‘Let’s meet up at 10 p.m.’ And I’m like, ‘Uh, no!’ I can’t understand that way of working.” But on this one night, hunkered down with Martin in Malibu, “like, a $300 UberX ride from my place in Hollywood,” Pall made an exception, because the Coldplay frontman “wanted to start after he put his kids to bed” – and, well, because it was…