======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '412'
                                          'artist'  'Faithless'
                                     'text_people'  ''
                                         'release'  'God Is a DJ'
                                           'title'  'God Is a DJ (Monster mix)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'trip hop', 'electronica', 'electronic', 'house']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '130.230'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'TALB' (Album/Movie/Show title)                     'God Is a DJ'
'TBPM' (BPM (beats per minute))                     '130.230'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         'God Is a DJ (Monster mix)'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Faithless'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['dance', 'trip hop', 'electronica', 'electronic', 'house']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.07 dB'
'TXXX:replaygain_track_peak'                        '0.416242'

========================== row from database ==========================
                                              'id'  1330927
                                            'path'  /data/Music/Bulk/00poprockelectronic/The Best of 70 80 & 90s - 211 Hits (6CDS)/Faithless - God Is a DJ (Monster Mix).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  412
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  6595991
                                           'mtime'  1621696617
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic The Best of 70 80 & 90s 211 Hits (6CDS) Mix) electronic generic or radio unsorted
                                      'tag_artist'  Faithless
                                     'tag_release'  God Is a DJ
                                       'tag_title'  God Is a DJ (Monster mix)
                                             'bpm'  130.23
                                    'search_title'  'a':3 'dj':4 'god':1 'is':2 'mix':7,8 'monster':5,6
                                   'search_artist'  'faithless':1
                                  'search_release'  'a':3 'dj':4 'god':1 'is':2
                                     'search_rest'  '00poprockelectronic':1 '211':8 '6cds':10,11 '70':5 '80':6 '90s':7 'best':3 'electronic':14 'generic':15 'hits':9 'mix':12,13 'of':4 'or':16 'radio':17 'the':2 'unsorted':18
                                    'search_combo'  '00poprockelectronic':14 '211':21 '6cds':23,24 '70':18 '80':19 '90s':20 'a':3A,12C 'best':16 'dj':4A,13C 'electronic':27 'faithless':9B 'generic':28 'god':1A,10C 'hits':22 'is':2A,11C 'mix':7A,8A,25,26 'monster':5A,6A 'of':17 'or':29 'radio':30 'the':15 'unsorted':31
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'trip hop', 'electronica', 'electronic', 'house']
                                        'tag_date'  1998
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696617.1583538  (2021-05-22 17:16:57)
                             'size'  6595991