X Factor fans were confused by the lack of ABBA songs in 'ABBA week'
Viewers weren't happy the acts only performed a short Mamma Mia! medley

This year The X Factor set up a very special treat for viewers: ABBA week.
Not only did Benny Andersson and Björn Ulvaeus join the semi-final this Saturday alongside select cast members from the Mamma Mia! films, but viewers were promised a Saturday night packed with songs by the Swedish supergroup.
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https://youtu.be/zKW5dYrH3LI
However, fans couldn’t help feeling a little frustrated after watching an hour of the acts performing some distinctly non-ABBA tunes, from Snow Patrol’s Run to Bon Jovi’s Livin on a Prayer.
https://twitter.com/eilidhw1991/status/1066425573319352320
https://twitter.com/IsThatLew/status/1066427634505211904
https://twitter.com/FPandAlice/status/1066423628105945088
https://twitter.com/saz_10123/status/1066428212295680000
https://twitter.com/Chris_grand_333/status/1066427695846866950
And although viewers saw all contestants perform a short Mamma Mia! medley, many thought it wasn’t worth the hype.
https://twitter.com/BaziaLushbubble/status/1066438495806345216
Especially when Acacia and Aaliyah rapped Money, Money, Money...
https://twitter.com/LaurenMcKenna92/status/1066440293233373186
https://twitter.com/_phoebejones_/status/1066439711089192961
https://twitter.com/ROSESANDKNIVES_/status/1066439700943200256
Fortunately, fans will hear marginally more ABBA music on Sunday night, with the cast of Mamma Mia! set to perform songs from the hit film.