======================== unified (from filesystem) ========================
                                         'bitrate'  '174.457'
                                        'duration'  '344'
                                          'artist'  'The Best Arabian Album'
                                     'text_people'  ''
                                         'release'  'Arabic Music Singles'
                                           'title'  ' 05 - Akrohouha-Kazim Al Saher'
                                           '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']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-m'
                                             'bpm'  '123.632'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Arabic Music Singles'
'TBPM' (BPM (beats per minute))                     '123.632'
'TCON' (Content type, a.k.a. Genre)                 'loc-m'
'TIT2' (Title/songname/content description)         ' 05 - Akrohouha-Kazim Al Saher'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Best Arabian Album'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '000,191'
'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: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'                        '+0.31 dB'
'TXXX:replaygain_track_peak'                        '0.674693'

========================== row from database ==========================
                                              'id'  926008
                                            'path'  /data/Music/Bulk/00localcharacter/00south-europe-middle-east/Arabic Music Singles/2 Med. Volume [174k VBR]/The Best Arabian Album - 05 - Akrohouha-Kazim Al Saher.mp3
                                         'working'  None
                                         'bitrate'  174
                                    'duration_sec'  344
                                           'genre'  loc-m
                                        'filesize'  7506150
                                           'mtime'  1620526413
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00south europe middle east 2 Med. Volume [174k VBR] loc
                                      'tag_artist'  The Best Arabian Album
                                     'tag_release'  Arabic Music Singles
                                       'tag_title'   05 - Akrohouha-Kazim Al Saher
                                             'bpm'  123.632
                                    'search_title'  'akrohouha':1 'akrohouhakazim':3 'al':4 'kazim':2 'saher':5
                                   'search_artist'  'album':4 'arabian':3 'best':2 'the':1
                                  'search_release'  'arabic':1 'music':2 'singles':3
                                     'search_rest'  '00south':1 '174k':9,10 '2':5 'east':4 'europe':2 'loc':13 'med':6,7 'middle':3 'vbr':11,12 'volume':8
                                    'search_combo'  '00south':13 '174k':21,22 '2':17 'akrohouha':1A 'akrohouhakazim':3A 'al':4A 'album':9B 'arabian':8B 'arabic':10C 'best':7B 'east':16 'europe':14 'kazim':2A 'loc':25 'med':18,19 'middle':15 'music':11C 'saher':5A 'singles':12C 'the':6B 'vbr':23,24 'volume':20
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           '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'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526413.1637428  (2021-05-09 04:13:33)
                             'size'  7506150