======================== unified (from filesystem) ========================
                                         'bitrate'  '228.246'
                                        'duration'  '125'
                                          'artist'  'Red Foley'
                                     'text_people'  'Kapp/Michael H. Goldsen'
                                         'release'  ''
                                           'title'  "Cheatin' on Your Baby"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'american', 'western swing', '60s', 'classic country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1945'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '101.819'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '101.819'
'TCOM' (Composer)                                   'Kapp/Michael H. Goldsen'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '1945'
'TIT2' (Title/songname/content description)         "Cheatin' on Your Baby"
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Red Foley'
'TPUB' (Publisher)                                  'Buzzola'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.40.101'
'TXXX:Band/orchestra/accompaniment'                 'Various Artists'
'TXXX:DeviceConformanceTemplate'                    'L1'
'TXXX:IsVBR'                                        '1'
'TXXX:Length'                                       '125760'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['country', 'american', 'western swing', '60s', 'classic country']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'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'                        '+0.85 dB'
'TXXX:replaygain_track_peak'                        '0.309777'

========================== row from database ==========================
                                              'id'  1503546
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Old Country Music/Red Foley - Cheatin_ on Your Baby.wma.mp3
                                         'working'  None
                                         'bitrate'  228
                                    'duration_sec'  125
                                           'genre'  loc-namerica-country
                                        'filesize'  3593063
                                           'mtime'  1621628261
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Old Country Music Cheatin_ Baby.wma loc namerica country
                                      'tag_artist'  Red Foley
                                     'tag_release'  None
                                       'tag_title'  Cheatin' on Your Baby
                                             'bpm'  101.819
                                    'search_title'  'baby':5 'cheatin':1,2 'on':3 'your':4
                                   'search_artist'  'foley':2 'red':1
                                  'search_release'  
                                     'search_rest'  'baby':8 'babywma':10 'cheatin':7 'country':4 'exotica':2 'jazz':1 'loc':11 'music':6 'namerica':12 'old':5 'oldies':3 'wma':9
                                    'search_combo'  'baby':5A,15 'babywma':17 'cheatin':1A,2A,14 'country':11 'exotica':9 'foley':7B 'jazz':8 'loc':18 'music':13 'namerica':19 'old':12 'oldies':10 'on':3A 'red':6B 'wma':16 'your':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['country', 'american', 'western swing', '60s', 'classic country']
                                        'tag_date'  1945
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621628260.801235  (2021-05-21 22:17:40)
                             'size'  3593063