I’m rather confused by the config you posted. The NFS config should all be down in the volumes: section the only thing you reference in the service section is the name of the volume you define and the path to mount in the container. Something like this (tho I’m guessing as to what should be what with your setup).

services:
  navidrome:
    container_name: navidrome
    image: deluan/navidrome:latest
    ports:
      - "4533:4533"
    environment:
      ND_SCANSCHEDULE: 1h
      ND_LOGLEVEL: info
    volumes:
      - /opt/navidrome/data:/data
      - music:/music
volumes:
  music:
    driver_opts:
      type: nfs
      o: "addr=XXX.XXX.XXX.XXX,nolock,soft,ro"
      device: ":/nfs/Shared Music"