======================== unified (from filesystem) ========================
                                         'bitrate'  '234.126'
                                        'duration'  '255'
                                          'artist'  'Dead eyes see no future EP'
                                     'text_people'  ''
                                         'release'  '?'
                                           'title'  'dead eyes see no future-amrc'
                                           'quals'  ("['Q-HAP-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'eid-unsorted'
                                             'bpm'  '117.398'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '?'
'TBPM' (BPM (beats per minute))                     '117.398'
'TCON' (Content type, a.k.a. Genre)                 'eid-unsorted'
'TIT2' (Title/songname/content description)         'dead eyes see no future-amrc'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dead eyes see no future EP'
'TRCK' (Track number/Position in set)               '01'
'TXXX:Mp3gain_minmax'                               '125,204'
'TXXX:Mp3gain_undo'                                 '+006,+006,N'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.54 dB'
'TXXX:replaygain_track_peak'                        '0.382065'

========================== row from database ==========================
                                              'id'  1306169
                                            'path'  /data/Music/Bulk/00poprockelectronic/Arch Enemy/Dead eyes see no future EP/01 - dead_eyes_see_no_future-amrc.mp3
                                         'working'  None
                                         'bitrate'  234
                                    'duration_sec'  255
                                           'genre'  eid-unsorted
                                        'filesize'  7471114
                                           'mtime'  1620521223
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Arch Enemy 01 dead_eyes_see_no_future eid unsorted
                                      'tag_artist'  Dead eyes see no future EP
                                     'tag_release'  ?
                                       'tag_title'  dead eyes see no future-amrc
                                             'bpm'  117.398
                                    'search_title'  'amrc':6 'dead':1 'eyes':2 'future':5 'futureamrc':7 'no':4 'see':3
                                   'search_artist'  'dead':1 'ep':6 'eyes':2 'future':5 'no':4 'see':3
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'arch':2 'dead':4 'eid':9 'enemy':3 'eyes':5 'future':8 'no':7 'see':6 'unsorted':10
                                    'search_combo'  '00poprockelectronic':14 'amrc':6A 'arch':15 'dead':1A,8B,17 'eid':22 'enemy':16 'ep':13B 'eyes':2A,9B,18 'future':5A,12B,21 'futureamrc':7A 'no':4A,11B,20 'see':3A,10B,19 'unsorted':23
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620521223.199396  (2021-05-09 02:47:03)
                             'size'  7471114