======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '226'
                                          'artist'  'Tom Waits'
                                     'text_people'  ''
                                         'release'  'Tales From the Underground 4'
                                           'title'  'Brother Can You Spare a Dime'
                                           'quals'  ("['Q-JZFKS-2', 'Q-HAP-2', 'Q-LOCALNESS-2', 'Q-UNU-2', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '1978'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos'
                                             'bpm'  '131.328'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Tales From the Underground 4'
'TBPM' (BPM (beats per minute))                     '131.328'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-eos'
'TDRC' (Recording time)                             '1978'
'TIT2' (Title/songname/content description)         'Brother Can You Spare a Dime'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tom Waits'
'TRCK' (Track number/Position in set)               '14'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.42 dB'
'TXXX:replaygain_track_peak'                        '0.793030'

========================== row from database ==========================
                                              'id'  1362126
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/00songwriter-eos/Tom Waits/MBZ;#Tom Waits;#Tales From the Underground 4;#14;#Brother Can You Spare a Dime.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  226
                                           'genre'  ifs-songwriter-eos
                                        'filesize'  3620133
                                           'mtime'  1639508257
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 00songwriter eos MBZ;#Tom Waits;#Tales 4;#14;#Brother ifs songwriter eos
                                      'tag_artist'  Tom Waits
                                     'tag_release'  Tales From the Underground 4
                                       'tag_title'  Brother Can You Spare a Dime
                                             'bpm'  131.328
                                    'search_title'  'a':5 'brother':1 'can':2 'dime':6 'spare':4 'you':3
                                   'search_artist'  'tom':1 'waits':2
                                  'search_release'  '4':5 'from':2 'tales':1 'the':3 'underground':4
                                     'search_rest'  '00singer':1 '00songwriter':4 '14':14,17 '4':13,16 'brother':15,18 'eos':3 'ifs':19 'mbz':5,7 'songwriter':2 'tales':10,12 'tom':6,8 'waits':9,11
                                    'search_combo'  '00singer':14 '00songwriter':17 '14':27,30 '4':13C,26,29 'a':5A 'brother':1A,28,31 'can':2A 'dime':6A 'eos':16 'from':10C 'ifs':32 'mbz':18,20 'songwriter':15 'spare':4A 'tales':9C,23,25 'the':11C 'tom':7B,19,21 'underground':12C 'waits':8B,22,24 'you':3A
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']
                                        'tag_date'  1978
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1639508256.7709947  (2021-12-14 19:57:36)
                             'size'  3620133