======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '178'
                                          'artist'  "Waring's Pennsylvanians"
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Oh Baby'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-1', 'q-drums-1', 'q-other-4', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['all', '30s', 'old', 'dead', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1924'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '112.258'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '112.258'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1924'
'TIT2' (Title/songname/content description)         'Oh Baby'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               "Waring's Pennsylvanians"
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['all', '30s', 'old', 'dead', 'swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.09 dB'
'TXXX:replaygain_track_peak'                        '0.552366'

========================== row from database ==========================
                                              'id'  1503718
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1924/Waring_s Pennsylvanians - Oh Baby 1-2-1924.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  178
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3565325
                                           'mtime'  1620525760
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1924 Waring_s 1 2 1924 prerock jb jazz unsorted
                                      'tag_artist'  Waring's Pennsylvanians
                                     'tag_release'  None
                                       'tag_title'  Oh Baby
                                             'bpm'  112.258
                                    'search_title'  'baby':2 'oh':1
                                   'search_artist'  'pennsylvanians':4 's':2 'waring':1 'warings':3
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1':9 '1924':6 '2':10 'country':4 'exotica':2 'jazz':1 'jb':12 'oldies':3 'prerock':11 's':8 'unsorted':13 'waring':7
                                    'search_combo'  '00oldiepop':11 '1':15 '1924':12 '2':16 'baby':2A 'country':10 'exotica':8 'jazz':7 'jb':18 'oh':1A 'oldies':9 'pennsylvanians':6B 'prerock':17 's':4B,14 'unsorted':19 'waring':3B,13 'warings':5B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['all', '30s', 'old', 'dead', 'swing']
                                        'tag_date'  1924
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620525759.7655942  (2021-05-09 04:02:39)
                             'size'  3565325