Most of 99 Posse's songs deal with political or social issues,[1] and the group members are considered left-wing hardliners.
As a showing of their activism, all of the group's albums have been released with a prezzo politico ("political price"): each CD displays a sticker saying "Don't pay more than...".
The group has gained popularity in Italy through its songs and its voicing of progressive political causes.
Subsequent albums, Cerco Tiempo (1996) and Corto Circuito (1998), included new styles like drum 'n bass and trip hop.
On 18 July 2009, they came back without Meg in Naples during a concert created by movements against repression and the blocking of 21 activists for G8 in Turin's university.