The Swedish pop group is known for having some sad songs. * "The Winner Takes It All" might be one of the saddest pop songs ever. Even worse is Meryl Streep's version in Mamma Mia!. Saddest. Lost. Love. Song. EVER. * Also, "Cassandra." * And "Fernando", once you read the lyrics. * "Slipping Through My Fingers", to name yet another. Bjorn wrote it after realizing he (and his ex-wife Agnetha, who sings the song) missed out on his daughter's childhood by being so career-obsessed. It can bring mothers and daughters alike to tears, as the latter is leaving childhood behind. * It's also kind of hard to keep a dry eye through "SOS". * "One Of Us" can be added to the list of unbearable ABBA songs. * Their incomplete mini-musical, "The Girl with the Golden Hair", turns int