Classify the following musical genres:
- Punk
- Jazz
- Heavy metal
- Punk: Rock music genre
- Jazz: Jazz music genre
- Heavy metal: Rock music genre
Complete the following task based on the instruction and optional input provided.### Instruction:
Classify the following musical genres:

### Input:
- Punk
- Jazz
- Heavy metal

### Output:
- Punk: Rock music genre
- Jazz: Jazz music genre
- Heavy metal: Rock music genre