Not sure if I shared this Quarteto em Cy album with you already:
https://www.youtube.com/playlist?list=OLAK5uy_n4zrrnKwzZQZ7VZ_DZoCZpKCJ-qBPka4A but I recently realized that not only does the album feature both Edu Lobo and Luiz Eca, but that QeC also does the backup vox on "Os afro-sambas de Baden e Vinícius" which IIRC is your favorite Brazilian album (and said backup vox are definitely a key to the album's success IMO). Anyway, the above album can be a bit cheesy at times (kinda like Brazilian Mamas & Papas without the Papas) but it's become one of the best Brazilian albums I've discovered recently.
And in case this is old news, here's another one I just discovered today by Carlos Dafe who I'm otherwise unfamiliar with. One of the funkiest samba slabs I've ever heard (right up there with "Africa Brasil"), lots of tasty keyboards on this one:
https://www.youtube.com/playlist?list=OLAK5uy_ny4yGIV4am_4bnpoI3lgjE95ZxGzearFI