When you want to stand out from others and their music, creating unique music is your only option. Hiring someone to make custom instrumentals for you is best because according to your project and its requirements, the music can be tailored. From melodies, harmonies, textures, and rhythm, everything can be made from scratch and altered whenever needed. The composer will be taking care of everything and doing what it takes to put an impact on the audience listening to your music, watching your film or video. This impact may not be there if you are simply using free music that may not go with your rap. This mismatch might end up being a fail. Whereas, if you use custom instrumentals there will be a taste and flavour of ‘something special’ in the soundtrack. Some people or sites that are offering you such services, might also give a sample piece or a demonstration of their work so as to build your trust and seal the deal.