We have tons of subgenres of what would be considered pop music over here... I will pick some of the most popular... Here we go... =)
Axé (brazilian afro-pop):
Ivete Sangalo (our "queen of pop", she will record a already sold out concert at Madison Square Garden in Semptember)
Cláudia Leitte (started as a Ivete rip-off, now she trying to find her own sound)
Sertanejo Universitário ("country" pop):
Victor & Leo (duo of brothers, pretty popular now)
Luan Santana (and he is from my city, pretty much the biggest name right now)
Brega-pop (a mix of indigenous, caribean, latin and american music):
Banda Calypso (wife and husband, HUGE)
MPB ("brazilian popular music", it's our "traditional" pop):
Marisa Monte (considered the most influent brazilian singer since the 90s, still have hits)
Vanessa da Mata (one of those influenced by Marisa)
Ana Carolina (she was bigger some time ago, but still is in the game)
Seu Jorge (Most likelly the biggest with "pop-samba" right now)
Marcelo D2 (mixes samba + hip hop + pop)
Pop (pop on a more "usual" way):
Sandy & Junior (pop duo, brother and sister, started young and lasted for almost 20 years)
Wanessa Camargo (american pop star wannabe)
Marjorie Estiano (actress/singer, not as popular as the other 2, but steady enough)
Latino (have ocasional hits, goes down, have more ocasional hits...)
Jota Quest (active for a while, have huge hits here and there)
Pop-rock:
Restart (pretty new, considered teen music)
NX0 (a little older, teen music too)
Pitty (one of the biggest acts from the last decade, still big)
Skank (active for a while, huge hits here and there)