======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '206'
                                          'artist'  'Madness'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Nightboat to Cairo'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-3', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'new wave', 'ska', 'pop', 'british']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'loc-style-reggae or dub or ska or dancehall-ska'
                                             'bpm'  '102.3'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '102.3'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-reggae or dub or ska or dancehall-ska'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Nightboat to Cairo'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Madness'
'TXXX:Mp3gain_minmax'                               '098,187'
'TXXX:Mp3gain_undo'                                 '+002,+002,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:Tracknum'                                     '04'
'TXXX:lastfmtags'                                   ['80s', 'new wave', 'ska', 'pop', 'british']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.14 dB'
'TXXX:replaygain_track_peak'                        '0.633174'

========================== row from database ==========================
                                              'id'  1382552
                                            'path'  /data/Music/Bulk/00localcharacter/00reggae-dub/Madness/Divine Madness/Madness - Nightboat to Cairo - 04.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  206
                                           'genre'  loc-style-reggae or dub or ska or dancehall-ska
                                        'filesize'  3302668
                                           'mtime'  1620521829
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00reggae dub Divine 04 loc style reggae or dub or ska or dancehall ska
                                      'tag_artist'  Madness
                                     'tag_release'  None
                                       'tag_title'  Nightboat to Cairo
                                             'bpm'  102.3
                                    'search_title'  'cairo':3 'nightboat':1 'to':2
                                   'search_artist'  'madness':1
                                  'search_release'  
                                     'search_rest'  '00reggae':1 'dancehall':9 'divine':3 'dub':2 'loc':4 'or':7 'reggae':6 'ska':8 'style':5
                                    'search_combo'  '00reggae':5 'cairo':3A 'dancehall':13 'divine':7 'dub':6 'loc':8 'madness':4B 'nightboat':1A 'or':11 'reggae':10 'ska':12 'style':9 'to':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'new wave', 'ska', 'pop', 'british']
                                        'tag_date'  1985
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620521829.369093  (2021-05-09 02:57:09)
                             'size'  3302668