Two formulas to create a group I'm guaranteed to love

[samhexum]

Four singing siblings, who sadly die in the reverse order of birth, leaving only the eldest alive, who continues to perform with their offspring. The baby of the family died much younger than the others, having never managed to conquer their substance abuse problem.

The Pointer Sisters and the Gibb Brothers… Andy was never a member of the Bee Gees, but they all worked on his albums, so I'm counting that.  Bonnie left the group early, but still counts.

An equal number of men and women, the women do the majority (but not all) of the singing, one of the women is blonde, and they're from Sweden.

ABBA, Roxette, ace of base

Edited 52 minutes ago by samhexum
for shits and giggles