▁many ▁of ▁its ▁compos itions , ▁such ▁as ▁in ▁their ▁use ▁of ▁analog ▁key boards ▁and ▁complex ▁vocal ▁arrang ements . ▁ ▁The ▁group ▁reached ▁the ▁peak ▁of ▁their ▁success ▁during ▁the ▁ 1 9 8 0 s ▁with ▁notable ▁compos itions ▁and ▁performance ▁of ▁popular ▁Brazil ian ▁songs . ▁Due ▁to ▁the ▁m ild , ▁often ▁happy ▁and ▁so othing ▁theme ▁of ▁many ▁of ▁its ▁compos itions , ▁the ▁band ▁was ▁quite ▁popular ▁among ▁children . ▁ ▁Disc ography ▁ 1 4 ▁Bis ▁( 1 9 7 9 ) ▁▁ 1 4 ▁Bis ▁II ▁( 1 9 8 0 ) ▁ ▁Esp el hos ▁das ▁Á gu as ▁( 1 9 8 1 ) ▁ ▁Al ém ▁Para í so ▁( 1 9 8 2 ) ▁ ▁A ▁I dade ▁da ▁Lu z ▁( 1 9 8 3 ) ▁ ▁A ▁N ave ▁V ai ▁( 1 9 8 5 ) ▁ ▁A o ▁V ivo ▁( 1 9 8 7 ) ▁ ▁S ete ▁( 1 9 8 7 ) ▁ ▁Qu atro ▁por ▁Qu atro ▁( 1 9 9 3 ) ▁ ▁S iga ▁o ▁Sol ▁( 1 9 9 6 ) ▁ ▁Bis ▁Ac ú st ico ▁( 1 9 9 9 ) ▁ ▁B oca ▁Live ▁e ▁ 1 4 ▁Bis ▁A o ▁V ivo ▁( 2 0 0 0 ) ▁ ▁Out ros ▁Plan os ▁( 2 0 0 4 ) ▁▁ 1 4 ▁Bis ▁- ▁A o ▁V ivo ▁- ▁CD / D VD ▁( 2