Songs from Movies

In 'Biograf?a de una locomotora (1948)', credits show Music used

The song In 'Biograf?a de una locomotora (1948)', credits show Music used, was featured in movies like Entrada en servicio. What Movie makes the best use of In 'Biograf?a de una locomotora (1948)', credits show Music used in it's soundtrack?

In 'Biograf?a de una locomotora (1948)', credits show Music used was featured in the following movies:

Entrada en servicio
Factor?as ferroviarias
Tendido de una l?nea