Hello a commercial score, it is often the format PIANO + VOICE in three staves SINGING - Accompaniment - Basses (all for piano) as soon as you want more instrument it is the separate parts which are proposed by the publishers with the conductor. A piano voice is 5 euros a conductor is 100 euros. And there are such expensive conductors that are only - rented - by the publishers. My generosity will stop at the Midi karaoke file which is a musical representation of the conductor. You can open it in a score editor and you will have all the notes heard in the CD and you can choose the musical part that suits you...https://www.swisstransfer.com/d/b19fe81c-afad-4e20-9a20-f685ea07ed2e