The manguebeat movement is a cultural movement  created circa 1991 in  the city of Recife in Northeast Brazil as a response to the city's  cultural and economical stagnation.
The original movement named itself mangue bit, "mangue" for  Recife's  mangroves and "bit" to the computer bit central to the movement's   electronic music influences. Since then, mangue bit has been more  commonly called manguebeat.
The stylistic origins of the music are in maracatu, punk rock, hip  hop, samba, Brazilian folk music, and psychedelic rock. The first wave  appeared in the 1990s. Mombojó is part of the second wave of the  manguebeat movement. They were featured in MTV's coverage (Sintonizando  Recife) of manguebeat along with fellow bands China and Maquinado.
excerpt from review by Kees Schoof of MúsicaBrasileira.org:
In the 1960's and the 1970's it was quite normal to "discover" new  groups              with very young musicians. They were inventive, talented and  a joy to listen              to. Next the music world was dominated by disco and other  dance music. The              punk revolution tried to break that, but until now many  young musicians seem              to focus on an obvious road to success: play what teenagers  want to hear,              follow the trend lines, don't worry too much about musical  talent.
But of course there is more, it's only hard to find. So now  and then the              matured music lover is pleasantly surprised by a bunch of  youngsters. Like              the band from Recife, Pernambuco, called Mombojó. Formed by  seven obstinate              youngster, ranging in age between 17 and 21 years old, they  perform music              that is hard to define. It's a bit of everything: a bit of  samba, a bit of              bossa, a bit of pop, rock, jazz, rock 'n roll, punk, mangue  beat, reggae...              But above all: it's clever. The band does its own thing,  something that is              definitely appreciated by the music critics, who rave about  the quality of              the presented music.
The band's sound is not seldom compared  to a mix of              Mundo Livre S/A and Los Hermanos. Lúcio Maia (Nação Zumbi)  acknowledges the quality of the band in an interview, admiring their own  sound. This year the              band released its first cd independently, Nadadenovo (Nothing new). A well              chosen title, because when hearing this cd, one will  probably say:              everything sounds new here. But the musical influences refer  to tradition.              Singer Felipe S, 21 years old, states that his main  influence is Tom Jobim.              In the music you'll also hear the spiritual presence of  icons like Hermeto            Pascoal and Chico Science.