======================== unified (from filesystem) ========================
                                         'bitrate'  '129.679'
                                        'duration'  '128'
                                          'artist'  'Damage Done By Worms'
                                     'text_people'  ''
                                         'release'  'Tonight!'
                                           'title'  'Hot Wheels... Motor Burn'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['german', 'neo rockabilly', 'psychobilly', 'rockabilly']"
                                     'discogstags'  "['psychobilly', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'rock-rockabilly or psychobilly'
                                             'bpm'  '98.406'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Tonight!'
'TBPM' (BPM (beats per minute))                     '98.406'
'TCON' (Content type, a.k.a. Genre)                 'rock-rockabilly or psychobilly'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Hot Wheels... Motor Burn'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Damage Done By Worms'
'TPE2' (Band/orchestra/accompaniment)               'Damage Done By Worms'
'TRCK' (Track number/Position in set)               '4'
'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', 'neo rockabilly', 'psychobilly', 'rockabilly']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.84 dB'
'TXXX:replaygain_track_peak'                        '0.480365'

========================== row from database ==========================
                                              'id'  1353009
                                            'path'  /data/Music/Bulk/00poprockelectronic/musica/Damage Done By Worms/Tonight! [1999]/04 - Hot Wheels... Motor Burn.mp3
                                         'working'  None
                                         'bitrate'  129
                                    'duration_sec'  128
                                           'genre'  rock-rockabilly or psychobilly
                                        'filesize'  2094158
                                           'mtime'  1620526294
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic musica [1999] 04 rock rockabilly psychobilly
                                      'tag_artist'  Damage Done By Worms
                                     'tag_release'  Tonight!
                                       'tag_title'  Hot Wheels... Motor Burn
                                             'bpm'  98.406
                                    'search_title'  'burn':5 'hot':1 'motor':4 'wheels':2,3
                                   'search_artist'  'by':3 'damage':1 'done':2 'worms':4
                                  'search_release'  'tonight':1
                                     'search_rest'  '00poprockelectronic':1 '1999':3,4 'musica':2 'psychobilly':7 'rock':5 'rockabilly':6
                                    'search_combo'  '00poprockelectronic':11 '1999':13,14 'burn':5A 'by':8B 'damage':6B 'done':7B 'hot':1A 'motor':4A 'musica':12 'psychobilly':17 'rock':15 'rockabilly':16 'tonight':10C 'wheels':2A,3A 'worms':9B
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  1A
                                           '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-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['german', 'neo rockabilly', 'psychobilly', 'rockabilly']
                                        'tag_date'  1999
                                     'discogstags'  ['psychobilly', 'rock']

============================== file details ==============================
                                           'mtime'  1620526293.6978383  (2021-05-09 04:11:33)
                             'size'  2094158