The NLMS Music Summer School offers a wide variety of musical groups for people to choose between, based upon skill and experience, from beginner to expert. The formal groups are:
- Symphony Orchestra – for skilled, experienced players
- Sinfonietta – for less experienced musicians
- Choir – a wide mixture of musical types for singing
- String Group – for less experienced or confident string players
- Wind Group – for less experienced or confident wind players
A variety of Open Sessions is also available, intended for anyone to join.