Our neighbours tonight at Casa Walmart are the Relampaguitos, a travelling band, from Mexico.

From their site:
With the aim of keeping northern music alive, Relampaguitos was born, a group from Monterrey, Nuevo León.

Rescuing the original sound and style made famous by Los Relámpagos del Norte in the sixties and making it known to new generations is the proposal with which this new musical concept called “The Resurgence of Northern Music” is created.