During July and August 2021, ABBA's Instagram page began a series of almost daily posts featuring most of their recorded output in chronological order and accompanied by a quote from Benny, Björn, Frida or Agnetha relating to that particular song. Fans speculated that it would end with some kind of announcement regarding the release of the two recorded songs from 2017 that we had been waiting for.

Indeed, when the countdown ended with I Am The City, it became clear that a new teaser campaign would begin as the website ABBA Voyage became live and teased that an announcement would be made a few days later on Thursday 2 September 2021.

It has taken a huge amount of work to bunch the different days together - all based on what they were wearing!  

Here are all the clips I could find with Björn blue-grey overshirt over a black T-shirt and Benny wearing a long black jacket over a grey shirt.

1. ABBA now on TikTok. Join us! 
   Benny plays Dancing Queen on the piano - but we only see his hands
   Published on TikTok: 29 August 2021
    
2. Thank You for joining our musical journey
   At the end of the description of I Am The City at the end of the Instagram countdown, Björn appeared in a very short video, saying, “Hi guys, I am Björn from ABBA. Thank you for joining our musical journey here on Instagram - a journey that never ends.”
   Published on Instagram: Sunday 29 August 2021
    
3. ABBA now on TikTok!
   A video of Benny playing Dancing Queen accompanied the announcement that ABBA had joined social media platform TikTok.
   Published on TikTok: Monday 30 August 2021
    
4. Who Is in this studio?
   A quick-paced journey up the corridor at RMV Studios to reveal Benny and Björn waving to the camera - with Gimme! Gimme! Gimme! (A Man After Midnight)  playing over the clip.
   Published on TIkTok: 31 August 2021
    
5. Heard this was trending
   Benny plays a bit of Chiquitita on the piano
   Published on TikTok: 1 September 2021
    
6. The wait is over
   Benny plays a bit of I Still Have Faith In You on the piano.
   Published on TikTok: 1 September 2021
    
7. Rating my famous outfits
   Björn goes through a series of ABBA photos of him wearing some early costumes and he either shakes his head or gives a thumbs up. Only the 0jumpsuit got a thumbs-up!
   Mamma Mia played over the clip.
   Published on TikTok: 3 September 2021
    
8. What a Wonderful version of Our Last Summer
   Benny (wearing headphones) plays Our Last Summer on the piano as a duet with TikToker Luís Fernandes on the guitar.
   Published on TikTok: 5 September 2021
    
9. Rock version of Dancing Queen, wow!
   Benny (wearing headphones) plays Dancing Queen on the piano as a duet with TikToker Lori on guitar.
   Published on TikTok: 5 September 2021
    
10. You guys are great! Let’s do more!
    Björn listens to vocal group Pegasus on TikTok singing their version of Dancing Queen.
    Published on TikTok: 6 September 2021
     
11. Benny plays Thank You For The Music on the piano
    Unknown where this was first published, but wanted to include it.
    Published on TikTok: 8 September 2021
     
12. Play with me!
    Benny plays the introduction to Mamma Mia on the piano.
    Published on TikTok: 9 September 2021
     
13. Sing over this
    Benny plays Dancing Queen on the piano.
    Published on TikTok: 10 September 2021
     
14.  It’s happening... ‘Just A Notion’
    Over the soundtrack of Just A Notion, Benny's fingers twiddle a knob in the control room.
    Published on TikTok: 18 October 2021
     
15. Who's excited?
    Björn tells us how excited he is about the new album.  He said, "We're SO excited because we're releasing our first album in 40 years. We decided to write new songs and asked the ladies whether they wanted to record them and we did.  And it grew and all of a sudden we had a whole album. There is a kind of depth or something different in it because of this 40 years of experience of life."
    Published on TikTok: 4 November 2021
     
16. Heard that ’Chiquitita’ was trending again…with @Elton John!
    Benny plays Chiquitita on the piano (might be same clip as 3. above) and is then joined by Elton John playing Bennie and the Jets!
    Published: 1 August 2022
     
17. I didn't choose the shoes, the shoes chose me!
    Björn appears to be reviewing a selection of pictures of him wearing boots during the ABBA years.  I suspect it's the same footage of Björn used in no.8 above, just used again a year later.
    Published on TikTok: 12 June 2022
    
    
     

YouTube links up to and including no.15
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Thanks to Jan Bach, Laura Zuliani and Chris Williams c/o ABBAtalk.
YouTube video c/o The Australian Female Gamer