======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '231'
                                          'artist'  'Scum Rats'
                                     'text_people'  ''
                                         'release'  'Go Out In A Scum Dream'
                                           'title'  'Die To Be Free'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['german', 'psychobilly', 'old school psychobilly']"
                                     'discogstags'  "['psychobilly', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'rock-rockabilly or psychobilly'
                                             'bpm'  '144.748'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Go Out In A Scum Dream'
'TBPM' (BPM (beats per minute))                     '144.748'
'TCON' (Content type, a.k.a. Genre)                 'rock-rockabilly or psychobilly'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Die To Be Free'
'TKEY' (Initial key)                                '9A'
'TLEN' (Length)                                     '231157'
'TPE1' (Lead performer(s)/Soloist(s))               'Scum Rats'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['psychobilly', 'rock']
'TXXX:lastfmtags'                                   ['german', 'psychobilly', 'old school psychobilly']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.19 dB'
'TXXX:replaygain_track_peak'                        '0.868792'

========================== row from database ==========================
                                              'id'  1356030
                                            'path'  /data/Music/Bulk/00poprockelectronic/musica/Scum Rats/Go Out In A Scum Dream/07 - Die To Be Free.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  231
                                           'genre'  rock-rockabilly or psychobilly
                                        'filesize'  5549829
                                           'mtime'  1620526762
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic musica 07 rock rockabilly or psychobilly
                                      'tag_artist'  Scum Rats
                                     'tag_release'  Go Out In A Scum Dream
                                       'tag_title'  Die To Be Free
                                             'bpm'  144.748
                                    'search_title'  'be':3 'die':1 'free':4 'to':2
                                   'search_artist'  'rats':2 'scum':1
                                  'search_release'  'a':4 'dream':6 'go':1 'in':3 'out':2 'scum':5
                                     'search_rest'  '00poprockelectronic':1 'musica':2 'or':5 'psychobilly':6 'rock':3 'rockabilly':4
                                    'search_combo'  '00poprockelectronic':13 'a':10C 'be':3A 'die':1A 'dream':12C 'free':4A 'go':7C 'in':9C 'musica':14 'or':17 'out':8C 'psychobilly':18 'rats':6B 'rock':15 'rockabilly':16 'scum':5B,11C 'to':2A
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['german', 'psychobilly', 'old school psychobilly']
                                        'tag_date'  2002
                                     'discogstags'  ['psychobilly', 'rock']

============================== file details ==============================
                                           'mtime'  1620526762.3541553  (2021-05-09 04:19:22)
                             'size'  5549829