it's a glorified cover band with some of the original members in the background:
Swedish vocal and instrumental group ABBA gained enormous success during the 1970s throughout Europe and the United States. Although the four original front members no longer tour, the group??s music is still as popular as ever, selling approximately two million records a year.
??ABBA The Tour? consists of the Swedish group Arrival and some of ABBA??s original musicians. They perform in identical clothes, have identical voices and create the right sound, motion and feeling. Arrival does everything possible to re-create a show as identical to ABBA as possible.
Arrival has toured in Sweden and all over the world including Denmark, Finland, Norway, Austria, Turkey, Australia, USA, Vietnam, China, Jamaica, Spain, France, Germany, Greece and many others. The band has performed on TV shows in many countries and held a large TV-recorded concert together with Robert Wells and his ??Rhapsody in Rock,? viewed to approximately 500 million people.
Arrival has been given permission to perform and record an unreleased ABBA song directly from Björn and Benny of ABBA.
The band also collaborates with ABBA??s clothing-designer to create exact copies of ABBA??s original clothing and is the only group in the world who has permission to copy the original clothing.
http://www.palacenet.com/default.asp?event=717 if this was the original band, you can be assured they'd be playing a much, much larger venue than the 930 club.