======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '216'
                                          'artist'  'Bee Gees'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'How Deep is your Love'
                                           'quals'  ("['Q-HAP-4', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['classic rock', '70s', 'oldies', 'pop', 'disco']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'electronic-we-disco or italo'
                                             'bpm'  '105.6'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '105.6'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-disco or italo'
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         'How Deep is your Love'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bee Gees'
'TXXX:Mp3gain_minmax'                               '086,187'
'TXXX:Mp3gain_undo'                                 '-002,-002,N'
'TXXX:Q-HAP'                                        '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['classic rock', '70s', 'oldies', 'pop', 'disco']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.15 dB'
'TXXX:replaygain_track_peak'                        '0.726242'

========================== row from database ==========================
                                              'id'  1525534
                                            'path'  /data/Music/Bulk/00poprockelectronic/Disco 70_s 80_s/Bee Gees - How Deep is your Love.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  216
                                           'genre'  electronic-we-disco or italo
                                        'filesize'  3469313
                                           'mtime'  1620537430
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Disco 70_s 80_s electronic we disco or italo
                                      'tag_artist'  Bee Gees
                                     'tag_release'  None
                                       'tag_title'  How Deep is your Love
                                             'bpm'  105.6
                                    'search_title'  'deep':2 'how':1 'is':3 'love':5 'your':4
                                   'search_artist'  'bee':1 'gees':2
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '70':3 '80':5 'disco':2 'electronic':7 'italo':10 'or':9 's':4,6 'we':8
                                    'search_combo'  '00poprockelectronic':8 '70':10 '80':12 'bee':6B 'deep':2A 'disco':9 'electronic':14 'gees':7B 'how':1A 'is':3A 'italo':17 'love':5A 'or':16 's':11,13 'we':15 'your':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-3', 'q-chart-4', 'q-other-3', 'Q-HAP-4', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['classic rock', '70s', 'oldies', 'pop', 'disco']
                                        'tag_date'  1980
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620537429.7029276  (2021-05-09 07:17:09)
                             'size'  3469313