======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '189'
                                          'artist'  'Harry Belafonte'
                                     'text_people'  ''
                                         'release'  'Calypso'
                                           'title'  'The Banana Boat Song (Day-O)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-2', 'Q-LOCALNESS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['60s', 'calypso', 'folk', 'oldies', 'swing']"
                                     'discogstags'  "['latin', 'folk, world, & country', 'calypso']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'loc-style-calypso'
                                             'bpm'  '123.557'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Calypso'
'TBPM' (BPM (beats per minute))                     '123.557'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-calypso'
'TDOR' (Original release time)                      '1956'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         'The Banana Boat Song (Day-O)'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Harry Belafonte'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['latin', 'folk, world, & country', 'calypso']
'TXXX:lastfmtags'                                   ['60s', 'calypso', 'folk', 'oldies', 'swing']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.48 dB'
'TXXX:replaygain_track_peak'                        '0.492514'

========================== row from database ==========================
                                              'id'  1283980
                                            'path'  /data/Music/Bulk/00poprockelectronic/Harry Belafonte/Calypso__cifsa12d.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  189
                                           'genre'  loc-style-calypso
                                        'filesize'  4556315
                                           'mtime'  1621630163
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Calypso__cifsa12d loc style calypso
                                      'tag_artist'  Harry Belafonte
                                     'tag_release'  Calypso
                                       'tag_title'  The Banana Boat Song (Day-O)
                                             'bpm'  123.557
                                    'search_title'  'banana':2 'boat':3 'day':5 'dayo':7 'o':6 'song':4 'the':1
                                   'search_artist'  'belafonte':2 'harry':1
                                  'search_release'  'calypso':1
                                     'search_rest'  '00poprockelectronic':1 'calypso':2,6 'cifsa12d':3 'loc':4 'style':5
                                    'search_combo'  '00poprockelectronic':11 'banana':2A 'belafonte':9B 'boat':3A 'calypso':10C,12,16 'cifsa12d':13 'day':5A 'dayo':7A 'harry':8B 'loc':14 'o':6A 'song':4A 'style':15 'the':1A
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['60s', 'calypso', 'folk', 'oldies', 'swing']
                                        'tag_date'  1956
                                     'discogstags'  ['latin', 'folk, world, & country', 'calypso']

============================== file details ==============================
                                           'mtime'  1621630162.5046592  (2021-05-21 22:49:22)
                             'size'  4556315