Is Maroon 5's Post Effective?

Here is a picture that was posted on both Maroon 5's Facebook and Twitter pages, with the text "#TBT to when we played Rock In Rio! Who's ready for more?" The images displays a photo of the Maroon 5 concert in Rio, featuring its huge pool of fans in the audience.

First of all, while scrolling through the band's Facebook and Twitter feeds, I noticed that Maroon 5's posts are much more engaging and creative on Facebook than on Twitter. This is both surprising and concerning, considering how large its fan base on Twitter is. I would suggest that the band be just as consistent on all of its social media sites, for increased credibility and effectiveness. 

However, I do believe that this specific post is one of Maroon 5's most effective so far. The picture and caption create a sense of nostalgia, appealing to the pathos of the readers. Through making a reference to what appears to be a hugely successful concert, given the turnout, the band also endorses its own ethos as a popular and successful band in the music industry. The purpose of this branding technique seems to be to excite the fans for future tours and concerts, as well as reference positive past memories. Although the audience to which Maroon 5 targets is often unclear in many of its tweets, the audience here is apparent. The band is targeting its existing loyal fans, and it does so effectively.