======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '70'
                                          'artist'  'Jefferson Airplane'
                                     'text_people'  ''
                                         'release'  'Psychedelic Promos Radio Spots Vol. 1'
                                           'title'  'Levis Spot # 1 (Grace - White Levis)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['rock', 'psychedelic rock', 'psychedelic', '60s', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'nonmusic-commercials;rock-cppex;rock-cppex-psychedelic'
                                             'bpm'  '143.925'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Psychedelic Promos Radio Spots Vol. 1'
'TBPM' (BPM (beats per minute))                     '143.925'
'TCON' (Content type, a.k.a. Genre)                 ['nonmusic-commercials', 'rock-cppex', 'rock-cppex-psychedelic']
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'Levis Spot # 1 (Grace - White Levis)'
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'Jefferson Airplane'
'TRCK' (Track number/Position in set)               '14'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rock', 'psychedelic rock', 'psychedelic', '60s', 'classic rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.55 dB'
'TXXX:replaygain_track_peak'                        '0.354685'
'TXXX:tracknum'                                     '14'

========================== row from database ==========================
                                              'id'  483383
                                            'path'  /data/Music/Bulk/0nonmusic/PsychedelicPromosRadioSpotsVol.1/14. Jefferson Airplane - Levis Spot # 1 (Grace - White Levis).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  70
                                           'genre'  nonmusic-commercials;rock-cppex;rock-cppex-psychedelic
                                        'filesize'  2844356
                                           'mtime'  1635956606
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic PsychedelicPromosRadioSpotsVol.1 14. nonmusic commercials;rock cppex;rock cppex psychedelic
                                      'tag_artist'  Jefferson Airplane
                                     'tag_release'  Psychedelic Promos Radio Spots Vol. 1
                                       'tag_title'  Levis Spot # 1 (Grace - White Levis)
                                             'bpm'  143.925
                                    'search_title'  '1':3 'grace':4,5 'levis':1,7 'spot':2 'white':6
                                   'search_artist'  'airplane':2 'jefferson':1
                                  'search_release'  '1':7 'promos':2 'psychedelic':1 'radio':3 'spots':4 'vol':5,6
                                     'search_rest'  '0nonmusic':1 '1':3,22 '14':5,6 'commercials':8,10 'cppex':12,14,16 'nonmusic':7 'promos':18 'psychedelic':17 'psychedelicpromosradiospotsvol':2 'psychedelicpromosradiospotsvol1':4 'radio':19 'rock':9,11,13,15 'spots':20 'vol':21 'vol1':23
                                    'search_combo'  '0nonmusic':17 '1':3A,16C,19,38 '14':21,22 'airplane':9B 'commercials':24,26 'cppex':28,30,32 'grace':4A,5A 'jefferson':8B 'levis':1A,7A 'nonmusic':23 'promos':11C,34 'psychedelic':10C,33 'psychedelicpromosradiospotsvol':18 'psychedelicpromosradiospotsvol1':20 'radio':12C,35 'rock':25,27,29,31 'spot':2A 'spots':13C,36 'vol':14C,15C,37 'vol1':39 'white':6A
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'psychedelic rock', 'psychedelic', '60s', 'classic rock']
                                        'tag_date'  1970
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1635956606.3258235  (2021-11-03 17:23:26)
                             'size'  2844356