======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '305'
                                          'artist'  '2562'
                                     'text_people'  ''
                                         'release'  'Aerial'
                                           'title'  'Greyscale'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-4', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronic', 'dub', 'techno', 'dubstep', 'minimal']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'electronic-th-ent-dubstep'
                                             'bpm'  '140.9'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Aerial'
'TBPM' (BPM (beats per minute))                     '140.9'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-ent-dubstep'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'Greyscale'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               '2562'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '4'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['electronic', 'dub', 'techno', 'dubstep', 'minimal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.42 dB'
'TXXX:replaygain_track_peak'                        '0.547276'

========================== row from database ==========================
                                              'id'  796190
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/2562/Aerial/2562 - aerial - 07 - greyscale.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  305
                                           'genre'  electronic-th-ent-dubstep
                                        'filesize'  7331511
                                           'mtime'  1638563151
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm aerial 07 greyscale electronic th ent dubstep
                                      'tag_artist'  2562
                                     'tag_release'  Aerial
                                       'tag_title'  Greyscale
                                             'bpm'  140.9
                                    'search_title'  'greyscale':1
                                   'search_artist'  '2562':1
                                  'search_release'  'aerial':1
                                     'search_rest'  'aerial':1 'dubstep':6 'electronic':3 'ent':5 'greyscale':2 'th':4
                                    'search_combo'  '2562':2B 'aerial':3C,4 'dubstep':9 'electronic':6 'ent':8 'greyscale':1A,5 'th':7
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-4', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronic', 'dub', 'techno', 'dubstep', 'minimal']
                                        'tag_date'  2008
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1638563150.9310706  (2021-12-03 21:25:50)
                             'size'  7331511