======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '155'
                                          'artist'  'Shepherd Sisters'
                                     'text_people'  ''
                                         'release'  "Rock 'N' Roll Era - Lost Treasures II"
                                           'title'  'Alone (Why Must I Be Alone)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '153'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '118.221'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "Rock 'N' Roll Era - Lost Treasures II"
'TBPM' (BPM (beats per minute))                     '118.221'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'Alone (Why Must I Be Alone)'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '155036'
'TPE1' (Lead performer(s)/Soloist(s))               'Shepherd Sisters'
'TRCK' (Track number/Position in set)               '153'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'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'                        '+1.73 dB'
'TXXX:replaygain_track_peak'                        '0.395740'

========================== row from database ==========================
                                              'id'  1450826
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/1957-153 - Shepherd Sisters - Alone (Why Must I Be Alone).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  155
                                           'genre'  prerock-unsorted
                                        'filesize'  6204056
                                           'mtime'  1621698323
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 1957 153 prerock unsorted
                                      'tag_artist'  Shepherd Sisters
                                     'tag_release'  Rock 'N' Roll Era - Lost Treasures II
                                       'tag_title'  Alone (Why Must I Be Alone)
                                             'bpm'  118.221
                                    'search_title'  'alone':1,7 'be':6 'i':5 'must':4 'why':2,3
                                   'search_artist'  'shepherd':1 'sisters':2
                                  'search_release'  'era':5 'ii':8 'lost':6 'n':2,3 'rock':1 'roll':4 'treasures':7
                                     'search_rest'  '00oldiepop':5 '153':7 '1957':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'unsorted':9
                                    'search_combo'  '00oldiepop':22 '153':24 '1957':23 'alone':1A,7A 'be':6A 'country':21 'era':14C 'exotica':19 'i':5A 'ii':17C 'jazz':18 'lost':15C 'must':4A 'n':11C,12C 'oldies':20 'prerock':25 'rock':10C 'roll':13C 'shepherd':8B 'sisters':9B 'treasures':16C 'unsorted':26 'why':2A,3A
                                    'tag_tracknum'  153
                                      '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-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698323.2964818  (2021-05-22 17:45:23)
                             'size'  6204056