gistfile1.txt

import json
import sys

if __name__ == '__main__':
    with open(sys.argv[1]) as jdata:
        data = json.load(jdata)

        # fetch identification data
        identifiers = {d['description'][12:]:d['value']
                            for d in data['identifiers']
                                if 'description' in d}

        for d in data['tracklist']:
            if 'position' in d:
                position = d['position']
                identifier = identifiers[position] if position in identifiers else "NOT FOUND"
                print("%s - %s" % (position, identifier))