======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '283'
                                          'artist'  'Arabic Amr Diab'
                                     'text_people'  ''
                                         'release'  'Arabic Music Singles'
                                           'title'  ' Rageen'
                                           '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-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['arabic', 'egyptian', 'world', 'pop', 'middle eastern']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'loc-m'
                                             'bpm'  '98.406'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Arabic Music Singles'
'TBPM' (BPM (beats per minute))                     '98.406'
'TCON' (Content type, a.k.a. Genre)                 'loc-m'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         ' Rageen'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Arabic Amr Diab'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '142,194'
'TXXX:Mp3gain_undo'                                 '-002,-002,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'                                   ['arabic', 'egyptian', 'world', 'pop', 'middle eastern']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.74 dB'
'TXXX:replaygain_track_peak'                        '0.753423'

========================== row from database ==========================
                                              'id'  926520
                                            'path'  /data/Music/Bulk/00localcharacter/00south-europe-middle-east/Arabic Music Singles/1 Low Volume [112k-256k]/Arabic_Amr Diab - Rageen.mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  283
                                           'genre'  loc-m
                                        'filesize'  3965402
                                           'mtime'  1620526368
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00south europe middle east 1 Low Volume [112k 256k] Arabic_Amr loc
                                      'tag_artist'  Arabic Amr Diab
                                     'tag_release'  Arabic Music Singles
                                       'tag_title'   Rageen
                                             'bpm'  98.406
                                    'search_title'  'rageen':1
                                   'search_artist'  'amr':2 'arabic':1 'diab':3
                                  'search_release'  'arabic':1 'music':2 'singles':3
                                     'search_rest'  '00south':1 '1':5 '112k':8,9 '256k':10,11 'amr':13 'arabic':12 'east':4 'europe':2 'loc':14 'low':6 'middle':3 'volume':7
                                    'search_combo'  '00south':8 '1':12 '112k':15,16 '256k':17,18 'amr':3B,20 'arabic':2B,5C,19 'diab':4B 'east':11 'europe':9 'loc':21 'low':13 'middle':10 'music':6C 'rageen':1A 'singles':7C 'volume':14
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['arabic', 'egyptian', 'world', 'pop', 'middle eastern']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526367.947938  (2021-05-09 04:12:47)
                             'size'  3965402