I think it was something to the effect of Anderson and Wakeman were burnt out, Bruce Woolley and Geoffrey Downes of the were considered since the two bands had collaborated,notably on the Buggles' album Life. World. Yes. I think Downes might've been still in Asia at the time and there was some sort of weird mix-up in communications. Complete accident, they were looking to contact the lead singer of Asia, John Wetton, but someone heard "Get me the lead singer of Aha!" (It's been disputed who said it, but my money's on Ringo) and by sheer chance, they found a-ha, brought in Harket and Furuholmen, had Waaktaar do session work for some other bands working at Apple Corps, and kept Trevor Horn on production for the album. Anderson and Wakemen came back for the next album, but introducing the western world to Harket through Yes ended up doing great things for a-ha's debut album Hunting High and Low.
I imagine if it weren't for that, It's Always Sunny on TV wouldn't have used the similarly-titled single for their theme song and people's lasting impression of a-ha would've been like, I dunno, Take on Me. Don't get me wrong, the song is good, but I absolutely love The Sun Always Shines on TV and consider it a-ha's finest work.