Elton John and ABBA recently shared an incredible mash-up of “Chiquitita” and “Bennie and the Jets” on TikTok. “Heard about this little mashup of Bennie and the Jets with @ABBA and had to get involved,” Elton captioned the video, adding the hashtags “#piano #bennieandthejets #abba #eltonjohn #remix #pop #chiquitita” ABBA’s official TikTok account also shows…