======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '211'
                                          'artist'  '3 Doors Down'
                                     'text_people'  ''
                                         'release'  'Away From The Sun'
                                           'title'  'Running Out Of Days'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['alternative rock', 'alternative', 'hard rock', 'rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '105.974'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Away From The Sun'
'TBPM' (BPM (beats per minute))                     '105.974'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TDOR' (Original release time)                      '2002'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Running Out Of Days'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               '3 Doors Down'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['alternative rock', 'alternative', 'hard rock', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.58 dB'
'TXXX:replaygain_track_peak'                        '0.395362'

========================== row from database ==========================
                                              'id'  1491782
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/00dutch/3 Doors Down - Running Out Of Days.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  211
                                           'genre'  rock-unsorted
                                        'filesize'  5070015
                                           'mtime'  1678456032
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe 00dutch rock unsorted
                                      'tag_artist'  3 Doors Down
                                     'tag_release'  Away From The Sun
                                       'tag_title'  Running Out Of Days
                                             'bpm'  105.974
                                    'search_title'  'days':4 'of':3 'out':2 'running':1
                                   'search_artist'  '3':1 'doors':2 'down':3
                                  'search_release'  'away':1 'from':2 'sun':4 'the':3
                                     'search_rest'  '00dutch':4 '00mid':1 'europe':3 'north':2 'rock':5 'unsorted':6
                                    'search_combo'  '00dutch':15 '00mid':12 '3':5B 'away':8C 'days':4A 'doors':6B 'down':7B 'europe':14 'from':9C 'north':13 'of':3A 'out':2A 'rock':16 'running':1A 'sun':11C 'the':10C 'unsorted':17
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HAP-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']
                                      'lastfmtags'  ['alternative rock', 'alternative', 'hard rock', 'rock']
                                        'tag_date'  2002
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1678456032.0009878  (2023-03-10 14:47:12)
                             'size'  5070015