======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '193'
                                          'artist'  'Al Bowlly'
                                     'text_people'  ''
                                         'release'  'HMV BD- 865'
                                           'title'  "I'm Stepping Out + I Haven't Time (+ Jimmy Mesene)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', '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'  "['30s', 'oldies', 'jazz', 'pop', '1930s', 'crooner']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1940'
                                        'comments'  ''
                                           'genre'  'prerock-vocal;prerock-jb-jazz-vocal'
                                             'bpm'  '145.163'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'HMV BD- 865'
'TBPM' (BPM (beats per minute))                     '145.163'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-vocal', 'prerock-jb-jazz-vocal']
'TDRC' (Recording time)                             '1940'
'TIT2' (Title/songname/content description)         "I'm Stepping Out + I Haven't Time (+ Jimmy Mesene)"
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Al Bowlly'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['30s', 'oldies', 'jazz', 'pop', '1930s', 'crooner']
'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'                        '+0.97 dB'
'TXXX:replaygain_track_peak'                        '0.826837'

========================== row from database ==========================
                                              'id'  1505255
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1940/Al Bowlly - I_m Stepping Out+I Haven_t Time (Jimmy Mesene) 12-9-1940.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  193
                                           'genre'  prerock-vocal;prerock-jb-jazz-vocal
                                        'filesize'  3874432
                                           'mtime'  1620527049
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1940 I_m Out+I Haven_t (Jimmy 12 9 1940 prerock vocal;prerock jb jazz vocal
                                      'tag_artist'  Al Bowlly
                                     'tag_release'  HMV BD- 865
                                       'tag_title'  I'm Stepping Out + I Haven't Time (+ Jimmy Mesene)
                                             'bpm'  145.163
                                    'search_title'  'haven':7 'havent':9 'i':1,6 'im':3 'jimmy':11 'm':2 'mesene':12,13 'out':5 'stepping':4 't':8 'time':10
                                   'search_artist'  'al':1 'bowlly':2
                                  'search_release'  '865':4 'bd':2,3 'hmv':1
                                     'search_rest'  '00oldiepop':5 '1940':6 '9':15 'country':4 'exotica':2 'haven':11 'i':7,10 'jazz':1 'jb':21 'jimmy':13,14 'm':8 'oldies':3 'out':9 'prerock':16,18,20 't':12 'vocal':17,19,22
                                    'search_combo'  '00oldiepop':24 '1940':25 '865':19C '9':34 'al':14B 'bd':17C,18C 'bowlly':15B 'country':23 'exotica':21 'haven':7A,30 'havent':9A 'hmv':16C 'i':1A,6A,26,29 'im':3A 'jazz':20 'jb':40 'jimmy':11A,32,33 'm':2A,27 'mesene':12A,13A 'oldies':22 'out':5A,28 'prerock':35,37,39 'stepping':4A 't':8A,31 'time':10A 'vocal':36,38,41
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', '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'  ['30s', 'oldies', 'jazz', 'pop', '1930s', 'crooner']
                                        'tag_date'  1940
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527048.8913834  (2021-05-09 04:24:08)
                             'size'  3874432