Installing double door to music practice room

Hello! I’m a musician, and I’m looking for someone with experience installing doors because I want to install a double door that connects my rehearsal space to the rest of my home. I already have both doors - one is a normal solid wooden door from the 1980’s, and one is a steel door (it’s heavy) specifically designed for sound isolation, since the room will be used for piano and guitar rehearsal. The two most important things for me are that the doors are installed properly, and that the doors are installed to specifications for sound isolation - the sound isolation is something I’ve researched so I will supply you with those specifications. Thank you for reading and for your offer! Patrick