======================== unified (from filesystem) ========================
                                         'bitrate'  '64.0'
                                        'duration'  '199'
                                          'artist'  'Red Elvises'
                                     'text_people'  ''
                                         'release'  'Bonus'
                                           'title'  'Juliett'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['surf', 'surf rock', 'psychobilly', 'rockabilly', 'rock', 'russian']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'rock-pop-surf;loc-russia'
                                             'bpm'  '142.307'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Bonus'
'TBPM' (BPM (beats per minute))                     '142.307'
'TCON' (Content type, a.k.a. Genre)                 ['rock-pop-surf', 'loc-russia']
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Juliett'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Red Elvises'
'TPE2' (Band/orchestra/accompaniment)               'Red Elvises'
'TXXX:Mp3gain_minmax'                               '137,199'
'TXXX:Mp3gain_undo'                                 '+005,+005,N'
'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'                                  'rock'
'TXXX:lastfmtags'                                   ['surf', 'surf rock', 'psychobilly', 'rockabilly', 'rock', 'russian']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.23 dB'
'TXXX:replaygain_track_peak'                        '0.464280'

========================== row from database ==========================
                                              'id'  1418780
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/Red Elvises/Red Elvises - Bonus/Red Elvises - Juliett.mp3
                                         'working'  None
                                         'bitrate'  64
                                    'duration_sec'  199
                                           'genre'  rock-pop-surf;loc-russia
                                        'filesize'  1599423
                                           'mtime'  1620737078
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner rock pop surf;loc russia
                                      'tag_artist'  Red Elvises
                                     'tag_release'  Bonus
                                       'tag_title'  Juliett
                                             'bpm'  142.307
                                    'search_title'  'juliett':1
                                   'search_artist'  'elvises':2 'red':1
                                  'search_release'  'bonus':1
                                     'search_rest'  'garage':2 'loc':8,10 'pop':6 'punk':1 'rock':5 'russia':11 'stoner':4 'surf':3,7,9
                                    'search_combo'  'bonus':4C 'elvises':3B 'garage':6 'juliett':1A 'loc':12,14 'pop':10 'punk':5 'red':2B 'rock':9 'russia':15 'stoner':8 'surf':7,11,13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['surf', 'surf rock', 'psychobilly', 'rockabilly', 'rock', 'russian']
                                        'tag_date'  2000
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620737077.5537982  (2021-05-11 14:44:37)
                             'size'  1599423