You need to find all the eight music sheets and hand them all in to Mourusque in the slums. The locations of the music sheets are as follows:

1. Momo’s apartment
2. Balcony table between the Clementine’s flat and Doc’s Library
3. Elliot’s Computing
4. Marketplace
5. The pub
6. Clementine’s apartment
7. Doc’s Piano
8. Sewer safe

To get the Marketplace music sheeet, you need an energy drink. You can find any of the energy drinks at the following location:

• Vending machine in front of Morusque
• Vending machine on a rooftop at the cntre of the slum
• Balcony near the grandma store alleyway
• Vending machine towards the back of the alleys.

The eight sheet music also requires the safe code, 1283.