======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '62'
                                          'artist'  'n/a'
                                     'text_people'  ''
                                         'release'  'no title'
                                           'title'  'Looking Good and Going Great - Chevrolet 1964'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['drone', 'ambient', 'noise', 'noise rock', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  '98'
                                            'date'  '1960'
                                        'comments'  ''
                                           'genre'  'nonmusic-commercials'
                                             'bpm'  '121.994'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'no title'
'TBPM' (BPM (beats per minute))                     '121.994'
'TCON' (Content type, a.k.a. Genre)                 'nonmusic-commercials'
'TDRC' (Recording time)                             '1960'
'TIT2' (Title/songname/content description)         'Looking Good and Going Great - Chevrolet 1964'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'n/a'
'TRCK' (Track number/Position in set)               '6/98'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['drone', 'ambient', 'noise', 'noise rock', 'experimental']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'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'                        '+2.12 dB'
'TXXX:replaygain_track_peak'                        '0.544767'

========================== row from database ==========================
                                              'id'  959000
                                            'path'  /data/Music/Bulk/0nonmusic/00commercials-tv-radio-movietrailer/commercial_psa/car ads and PSAs/car ads and PSAs - 06. looking good and going great - chevrolet 1964.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  62
                                           'genre'  nonmusic-commercials
                                        'filesize'  1002224
                                           'mtime'  1620525159
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic 00commercials tv radio movietrailer commercial_psa car ads PSAs car ads PSAs 06. looking good going great chevrolet nonmusic commercials
                                      'tag_artist'  n/a
                                     'tag_release'  no title
                                       'tag_title'  Looking Good and Going Great - Chevrolet 1964
                                             'bpm'  121.994
                                    'search_title'  '1964':7 'and':3 'chevrolet':6 'going':4 'good':2 'great':5 'looking':1
                                   'search_artist'  'a':2 'n':1 'na':3
                                  'search_release'  'no':1 'title':2
                                     'search_rest'  '00commercials':2 '06':11,12 '0nonmusic':1 'ads':9 'car':8 'chevrolet':17 'commercial':6 'commercials':19 'going':15 'good':14 'great':16 'looking':13 'movietrailer':5 'nonmusic':18 'psa':7 'psas':10 'radio':4 'tv':3
                                    'search_combo'  '00commercials':14 '06':23,24 '0nonmusic':13 '1964':7A 'a':9B 'ads':21 'and':3A 'car':20 'chevrolet':6A,29 'commercial':18 'commercials':31 'going':4A,27 'good':2A,26 'great':5A,28 'looking':1A,25 'movietrailer':17 'n':8B 'na':10B 'no':11C 'nonmusic':30 'psa':19 'psas':22 'radio':16 'title':12C 'tv':15
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['drone', 'ambient', 'noise', 'noise rock', 'experimental']
                                        'tag_date'  1960
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620525159.00276  (2021-05-09 03:52:39)
                             'size'  1002224