======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '224'
                                          'artist'  'The Police'
                                     'text_people'  ''
                                         'release'  'Greatest Hits'
                                           'title'  'Invisible Sun'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'new wave', 'classic rock', 'pop', 'rock']"
                                     'discogstags'  "['rock', 'pop', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  '16'
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'rock-pop'
                                             'bpm'  '120'
                                             'key'  '5B'
                                        'acoustid'  'c003bdc7-664e-47cb-baa5-e5a7f2ff85ae'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Greatest Hits'
'TBPM' (BPM (beats per minute))                     '120'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop'
'TDOR' (Original release time)                      '1992'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         'Invisible Sun'
'TKEY' (Initial key)                                '5B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The Police'
'TPE2' (Band/orchestra/accompaniment)               'The Police'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'A&M Records'
'TRCK' (Track number/Position in set)               '10/16'
'TSO2'                                              'Police, The'
'TSOP' (Performer sort order)                       'Police, The'
'TSRC' (ISRC (international standard recording code))  'GBAAM0201128/GBAAM8100004'
'TXXX:Acoustid Id'                                  'c003bdc7-664e-47cb-baa5-e5a7f2ff85ae'
'TXXX:Artists'                                      'The Police'
'TXXX:BARCODE'                                      '731454003025'
'TXXX:CATALOGNUMBER'                                '540 030-2'
'TXXX:MusicBrainz Album Artist Id'                  '9e0e2b01-41db-4008-bd8b-988977d6019a'
'TXXX:MusicBrainz Album Id'                         'e2668066-93ca-4680-86a9-b645a2d63ae4'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '9e0e2b01-41db-4008-bd8b-988977d6019a'
'TXXX:MusicBrainz Release Group Id'                 '5a614d6e-274a-3cc8-8e03-65cdd86b964f'
'TXXX:MusicBrainz Release Track Id'                 'decb5cdc-3475-4abe-b026-b8acdf1f5ca7'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'pop', 'pop rock']
'TXXX:lastfmtags'                                   ['80s', 'new wave', 'classic rock', 'pop', 'rock']
'TXXX:originalyear'                                 '1992'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.35 dB'
'TXXX:replaygain_track_peak'                        '0.989184'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'3de64aae-8bbe-4d65-b1d2-b38c3b6a2bf3')
'USLT::XXX'                                         ("I don't want to spend the rest of my life\r\n"
 'Looking at the barrel of an armalite\r\n'
 "I don't want to spend the rest of my days\r\n"
 'Keeping out of trouble like the soldiers say\r\n'
 "I don't want to spend my time in hell\r\n"
 'Looking at the walls of a prison cell\r\n'
 "I don't ever want to play the part\r\n"
 'Of a statistic on a government chart\r\n'
 '\r\n'
 'There has to be an invisible sun\r\n'
 'It gives its heat to everyone\r\n'
 'There has to be an invisible sun\r\n'
 "It gives us hope when the whole day's done\r\n"
 '\r\n'
 "It's dark all day and it glows all night\r\n"
 'Factory smoke and acetylene light\r\n'
 'I face the day with my head caved in\r\n'
 'Looking like something that the cat brought in\r\n'
 '\r\n'
 'There has to be an invisible sun\r\n'
 'It gives its heat to everyone\r\n'
 'There has to be an invisible sun\r\n'
 "It gives us hope when the whole day's done\r\n"
 '\r\n'
 "And they're only gonna change this place\r\n"
 'By killing everybody in the human race\r\n'
 'And they would kill me for a cigarette\r\n'
 'But I dont even want to die just yet\r\n'
 '\r\n'
 'There has to be an invisible sun\r\n'
 'It gives its heat to everyone\r\n'
 'There has to be an invisible sun\r\n'
 "It gives us hope when the whole day's done")

========================== row from database ==========================
                                              'id'  1340053
                                            'path'  /data/Music/Bulk/00poprockelectronic/The Police/10 - INVISIBLE SUN.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  224
                                           'genre'  rock-pop
                                        'filesize'  8981542
                                           'mtime'  1678463935
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 10 INVISIBLE SUN rock pop
                                      'tag_artist'  The Police
                                     'tag_release'  Greatest Hits
                                       'tag_title'  Invisible Sun
                                             'bpm'  120.0
                                    'search_title'  'invisible':1 'sun':2
                                   'search_artist'  'police':2 'the':1
                                  'search_release'  'greatest':1 'hits':2
                                     'search_rest'  '00poprockelectronic':1 'invisible':2 'pop':5 'rock':4 'sun':3
                                    'search_combo'  '00poprockelectronic':7 'greatest':5C 'hits':6C 'invisible':1A,8 'police':4B 'pop':11 'rock':10 'sun':2A,9 'the':3B
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-2']
                                      'lastfmtags'  ['80s', 'new wave', 'classic rock', 'pop', 'rock']
                                        'tag_date'  1998
                                     'discogstags'  ['rock', 'pop', 'pop rock']

============================== file details ==============================
                                           'mtime'  1678463935.295987  (2023-03-10 16:58:55)
                             'size'  8981542