======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '870'
                                          'artist'  'Big City Orchestra'
                                     'text_people'  ''
                                         'release'  'Lullaby'
                                           'title'  'uBung'
                                           'quals'  ("['Q-HAP-2', 'Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-1', "
 "'q-chart-1', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['industrial', 'noise', 'avant garde', 'experimental', 'old school "
 "industrial']")
                                     'discogstags'  "['electronic', 'noise', 'experimental', 'drone']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '8'
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'nonmusic-fragments-sounds and sfx'
                                             'bpm'  '141.2'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Lullaby'
'TBPM' (BPM (beats per minute))                     '141.2'
'TCON' (Content type, a.k.a. Genre)                 'nonmusic-fragments-sounds and sfx'
'TDRC' (Recording time)                             '2007'
'TIT2' (Title/songname/content description)         'uBung'
'TKEY' (Initial key)                                '4A'
'TMED' (Media type)                                 'Digital Media'
'TPE1' (Lead performer(s)/Soloist(s))               'Big City Orchestra'
'TPE2' (Band/orchestra/accompaniment)               'Big City Orchestra'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Umbrella Noize Collective'
'TRCK' (Track number/Position in set)               '2/8'
'TSO2'                                              'Big City Orchestra'
'TSOP' (Performer sort order)                       'Big City Orchestra'
'TXXX:CATALOGNUMBER'                                'UMB098'
'TXXX:MusicBrainz Album Artist Id'                  '44db62b4-8572-43cf-8ea2-6492c91b4db9'
'TXXX:MusicBrainz Album Id'                         '0711e478-6936-42ab-bce8-c4a459e09c49'
'TXXX:MusicBrainz Album Release Country'            'XW'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '44db62b4-8572-43cf-8ea2-6492c91b4db9'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['electronic', 'noise', 'experimental', 'drone']
'TXXX:lastfmtags'                                   ['industrial', 'noise', 'avant garde', 'experimental', 'old school industrial']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '1'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.47 dB'
'TXXX:replaygain_track_peak'                        '0.997924'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'823df3aa-de87-46d2-9ca9-367bd226f4de')

========================== row from database ==========================
                                              'id'  919293
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Big City Orchestra/2007 - Big City Orchestra - Lullaby (Umbrella Noize Collective) [192k]/02 - ubung.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  870
                                           'genre'  nonmusic-fragments-sounds and sfx
                                        'filesize'  20903638
                                           'mtime'  1636404217
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 2007 (Umbrella Noize Collective) [192k] 02 ubung nonmusic fragments sounds and sfx
                                      'tag_artist'  Big City Orchestra
                                     'tag_release'  Lullaby
                                       'tag_title'  uBung
                                             'bpm'  141.2
                                    'search_title'  'bung':3 'u':2 'ubung':1
                                   'search_artist'  'big':1 'city':2 'orchestra':3
                                  'search_release'  'lullaby':1
                                     'search_rest'  '192k':7,8 '2007':1 'and':13 'collective':5,6 'fragments':11 'noize':4 'nonmusic':10 'sfx':14 'sounds':12 'ubung':9 'umbrella':2,3
                                    'search_combo'  '192k':14,15 '2007':8 'and':20 'big':4B 'bung':3A 'city':5B 'collective':12,13 'fragments':18 'lullaby':7C 'noize':11 'nonmusic':17 'orchestra':6B 'sfx':21 'sounds':19 'u':2A 'ubung':1A,16 'umbrella':9,10
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-1', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['industrial', 'noise', 'avant garde', 'experimental', 'old school industrial']
                                        'tag_date'  2007
                                     'discogstags'  ['electronic', 'noise', 'experimental', 'drone']

============================== file details ==============================
                                           'mtime'  1636404217.2517142  (2021-11-08 21:43:37)
                             'size'  20903638