What would the sky sound like if the wavelengths emitted by stars were turned into music?

This music comes from a Planetary Nebula in Sextans A, one of the dwarf galaxies near the Milky Way.
Planetary Nebulae are low mass stars at nearly the end of their life cycle.
They have burned all the hydrogen and helium in their core and shell, transforming it into carbon and oxygen, but their mass (less than 8 times the mass of the Sun) is not high enough to start the combustion of the heavier elements. At this point the star has an inert carbon-oxygen core, while its outer shells are expanding. Consequently the surface gravitational force decrease and the star starts losing material. The lost material forms an expanding shell that surrounds the carbon-oxygen core, which itself is slowly contracting and cooling down; it will ultimately become a white dwarf. The Ultra-Violet light, emitted by the hot, condensed central star, is absorbed and then re-emitted in visible light by the atoms of the expanding gas.
PN_spectrum.jpg
Fig. 1: From L. Magrini et al. Planetary Nebulae and H II region in Sextans A.

We looked at the emission line wavelengths (like, for example, in Fig. 1) and converted them into frequencies audible to the ear, multiplying all of them by the same scaling factor, so that each emission line wavelength corresponded to a note, for example OII corresponds to F♯4/G♭4 and OIII corresponds to A4.
We then grouped the notes together according to which element they are associated with:
Oxygen – G♭4, A4, B4, E♭5, G♭5
Helium – G4, B♭4, D5, E5, F5, G♭5
Neon – G4
Hydrogen – G4, A♭4, A4, B4, E5
Nitrogen – C5, D5, E5
Sulphur – E5, B♭5
Argon – F5, G♭5
MusicScale.jpg
Fig. 2: Music scale.

The notes in each chord come from octaves 4 and 5 (see Fig. 2). We chose not to restrict ourselves to using notes from these two octaves so, for example, when you listen to the piece, you will hear a bass riff towards the end of the piece using the notes in Hydrogen but in a different octave.
As you listen to Star Song it may interest you to follow the logic session in Fig.3.
Enjoy!
Structure_Star_song.jpg
Fig. 3: Sequential structure of the Star song.