The repentistas of Pernambuco, Paraíba and Rio Grande do Norte are popular poets reply to any request in their audience singing fully improvised verses. They express Nordeste people’s attachment to own culture and land. In an emigration context, such a feeling is conveyed by the portuguese word saudade (nostalgia). There’s an analogy between population mobility and the principle moving improvisers. These ones, that are always travelling to meet their audience, personifymigrants’ archetype : improvisers’ performances contribute to a constantly redefined identity.