Being one of the prides of Saint Louis, the ensemble music lab is the most important moment for  students studying music because they are able to meet other musicians within a band that, followed by a teacher, will work on a repertoire during their rehearsals, or on arrangements and experimentations. The labs are made up of 28-30 rehearsals that take place weekly and last 80 minutes.

There are many occasions to perform in front of an audience: the live concerts that take place in March and July, the Lab on the road which represents an occasion in which the students get used to performing live, since they take place every week in various clubs in Rome from January to June.

The best bands are selected by Saint Louis Management for gigs, shifts, concerts and tours. Enrollment is open from November and are open to Saint Louis Students and externals. The auditions are mandatory and free.