How did ABBA become a group?

Answer 1

The men of the group knew each other from way back in high school. Benny and Bjorn began collaborating on songs and later added the girlfriend's voices. At the time they were all working on individual projects but saw the magic of the four voices together.

Answer 2

The group, especially the men, spent much of their time in the recording studio. They didn't tour like most bands. So they were one of the first to make Music Videos. We take it for granted but someone had to be first.

But what is more important, their music appealed to such a wide audience. They wrote quality music which has endured for over 30 years.