Portuguese speaker here.
To make a long story short: Nando Reis is celebrating his 2000 album “For when the rainbow meets the pot of gold” with a remix of the original tracks and a mini-tour. By chance, Barrett Martin and Peter Buck, who actually participated in that album originally, were already coming to Brazil, so Nando called them up to participate in this mini-tour. Stars aligned – so much so that both American musicians will be participating heavily as well in the next Nando album, to be released in 2023. So we can expect some Peter Buck for next year.
On a side note: it’s crazy to see Peter Buck playing “All Star” in the video above (the title being a reference to Converse sneakers). That song got some airplay in Brazil in the early 2000s and I know it well, but in the album he didn’t play in it originally. I guess live he’s participating in all songs, maybe.
To those asking: in the original album, Peter played in two songs: “Dessa vez” (“this time”), and “Frases mais azuis” ('bluer sentences").