1. Instrumental Ensembles
   • String section
   • Brass and/or Horns sections
   • Percussion Sections
2. Individual Instruments
   • Bass Guitar
   • Contrabass
   • Drums
   • Cymbals
   • Guitar - Either
   • Guitar (Acoustic)
   • Guitar (Electric)
   • Keyboarded
     • Accordion
     • Harpsichord
     • Organ
     • Piano
     • Synth
       • Imitative Synthesis
   • Non-Pitched Percussion
     • Hand Percussion
   • Horns
     • Trombone
     • Trumpet
   • Idiophone
   • String
   • Woodwind
     • Sax
       • Soprano
       • Alto
       • Tenor
       • Baritone
   • Other
3. Lyrical content
4. Vocals
   • Male
   • Female
5. Elements
6. Other