======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '131'
                                          'artist'  'Bobby Helms'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Jingle Bell Rock'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'country', '50s', 'rockabilly', 'male vocalists', 'christmas']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1958'
                                        'comments'  ''
                                           'genre'  'set-th-christmas;rock-pop-early-rockabilly'
                                             'bpm'  '119.265'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '58-260 POS 35'
'COMM:ID3v1 Comment:XXX'                            '58-260 POS 35'
'TBPM' (BPM (beats per minute))                     '119.265'
'TCON' (Content type, a.k.a. Genre)                 ['set-th-christmas', 'rock-pop-early-rockabilly']
'TDRC' (Recording time)                             '1958'
'TIT2' (Title/songname/content description)         'Jingle Bell Rock'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bobby Helms'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'country', '50s', 'rockabilly', 'male vocalists', 'christmas']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.41 dB'
'TXXX:replaygain_track_peak'                        '0.553114'

========================== row from database ==========================
                                              'id'  1449769
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1958/58-260 - Bobby Helms - Jingle Bell Rock.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  131
                                           'genre'  set-th-christmas;rock-pop-early-rockabilly
                                        'filesize'  5285729
                                           'mtime'  1620736453
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1958 58 260 set th christmas;rock pop early rockabilly
                                      'tag_artist'  Bobby Helms
                                     'tag_release'  None
                                       'tag_title'  Jingle Bell Rock
                                             'bpm'  119.265
                                    'search_title'  'bell':2 'jingle':1 'rock':3
                                   'search_artist'  'bobby':1 'helms':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1958':6 '260':8 '58':7 'christmas':11,13 'country':4 'early':16 'exotica':2 'jazz':1 'oldies':3 'pop':15 'rock':12,14 'rockabilly':17 'set':9 'th':10
                                    'search_combo'  '00oldiepop':10 '1958':11 '260':13 '58':12 'bell':2A 'bobby':4B 'christmas':16,18 'country':9 'early':21 'exotica':7 'helms':5B 'jazz':6 'jingle':1A 'oldies':8 'pop':20 'rock':3A,17,19 'rockabilly':22 'set':14 'th':15
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'country', '50s', 'rockabilly', 'male vocalists', 'christmas']
                                        'tag_date'  1958
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736452.989136  (2021-05-11 14:34:12)
                             'size'  5285729