======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '155'
                                          'artist'  'Dean Martin'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "I'd Cry Like A Baby"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['lounge', 'easy listening', 'jazz', 'oldies', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1954'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '85.779'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '85.779'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1954'
'TIT2' (Title/songname/content description)         "I'd Cry Like A Baby"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dean Martin'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['lounge', 'easy listening', 'jazz', 'oldies', 'swing']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.54 dB'
'TXXX:replaygain_track_peak'                        '0.671997'

========================== row from database ==========================
                                              'id'  1497289
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1954/Dean Martin - I_d Cry Like A Baby 24-4-1954.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  155
                                           'genre'  prerock-swing
                                        'filesize'  3106610
                                           'mtime'  1620562495
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1954 I_d 24 4 1954 prerock swing
                                      'tag_artist'  Dean Martin
                                     'tag_release'  None
                                       'tag_title'  I'd Cry Like A Baby
                                             'bpm'  85.779
                                    'search_title'  'a':6 'baby':7 'cry':4 'd':2 'i':1 'id':3 'like':5
                                   'search_artist'  'dean':1 'martin':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1954':6 '24':9 '4':10 'country':4 'd':8 'exotica':2 'i':7 'jazz':1 'oldies':3 'prerock':11 'swing':12
                                    'search_combo'  '00oldiepop':14 '1954':15 '24':18 '4':19 'a':6A 'baby':7A 'country':13 'cry':4A 'd':2A,17 'dean':8B 'exotica':11 'i':1A,16 'id':3A 'jazz':10 'like':5A 'martin':9B 'oldies':12 'prerock':20 'swing':21
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           '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-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['lounge', 'easy listening', 'jazz', 'oldies', 'swing']
                                        'tag_date'  1954
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562494.7166667  (2021-05-09 14:14:54)
                             'size'  3106610