======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '339'
                                          'artist'  'Arabic'
                                     'text_people'  ''
                                         'release'  'Arabic Music Singles'
                                           'title'  ' Dance Mix #2'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['dance', 'club', 'satanic anal destructor', 'abdul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'loc-m'
                                             'bpm'  '124.087'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Arabic Music Singles'
'TBPM' (BPM (beats per minute))                     '124.087'
'TCON' (Content type, a.k.a. Genre)                 'loc-m'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         ' Dance Mix #2'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Arabic'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '000,192'
'TXXX:Mp3gain_undo'                                 '+003,+003,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:lastfmtags'                                   ['dance', 'club', 'satanic anal destructor', 'abdul']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.96 dB'
'TXXX:replaygain_track_peak'                        '0.842843'

========================== row from database ==========================
                                              'id'  927838
                                            'path'  /data/Music/Bulk/00localcharacter/00south-europe-middle-east/Arabic Music Singles/1 Low Volume [112k-256k]/Arabic - Dance Mix #2.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  339
                                           'genre'  loc-m
                                        'filesize'  5433258
                                           'mtime'  1620526366
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00south europe middle east 1 Low Volume [112k 256k] loc m
                                      'tag_artist'  Arabic
                                     'tag_release'  Arabic Music Singles
                                       'tag_title'   Dance Mix #2
                                             'bpm'  124.087
                                    'search_title'  '2':3,4 'dance':1 'mix':2
                                   'search_artist'  'arabic':1
                                  'search_release'  'arabic':1 'music':2 'singles':3
                                     'search_rest'  '00south':1 '1':5 '112k':8,9 '256k':10,11 'east':4 'europe':2 'loc':12 'low':6 'm':13 'middle':3 'volume':7
                                    'search_combo'  '00south':9 '1':13 '112k':16,17 '2':3A,4A '256k':18,19 'arabic':5B,6C 'dance':1A 'east':12 'europe':10 'loc':20 'low':14 'm':21 'middle':11 'mix':2A 'music':7C 'singles':8C 'volume':15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'club', 'satanic anal destructor', 'abdul']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526365.820594  (2021-05-09 04:12:45)
                             'size'  5433258