======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '148'
                                          'artist'  'Joseph Spence'
                                     'text_people'  ''
                                         'release'  'Happy All The Time'
                                           'title'  'diamond on earth'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-OLDST-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['11', 'blues', 'gospel', 'folk', 'fingerstyle']"
                                     'discogstags'  "['blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'loc-namerica-gospel'
                                             'bpm'  '110.1'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Happy All The Time'
'TBPM' (BPM (beats per minute))                     '110.1'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-gospel'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'diamond on earth'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Joseph Spence'
'TRCK' (Track number/Position in set)               '5'
'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:discogstags'                                  'blues'
'TXXX:lastfmtags'                                   ['11', 'blues', 'gospel', 'folk', 'fingerstyle']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.58 dB'
'TXXX:replaygain_track_peak'                        '0.431737'

========================== row from database ==========================
                                              'id'  727893
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Joseph Spence - [1985] - Happy all the time/05 - diamond on earth.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  148
                                           'genre'  loc-namerica-gospel
                                        'filesize'  5943581
                                           'mtime'  1621628672
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm [1985] all the time 05 loc namerica gospel
                                      'tag_artist'  Joseph Spence
                                     'tag_release'  Happy All The Time
                                       'tag_title'  diamond on earth
                                             'bpm'  110.1
                                    'search_title'  'diamond':1 'earth':3 'on':2
                                   'search_artist'  'joseph':1 'spence':2
                                  'search_release'  'all':2 'happy':1 'the':3 'time':4
                                     'search_rest'  '1985':1,2 'all':3 'gospel':8 'loc':6 'namerica':7 'the':4 'time':5
                                    'search_combo'  '1985':10,11 'all':7C,12 'diamond':1A 'earth':3A 'gospel':17 'happy':6C 'joseph':4B 'loc':15 'namerica':16 'on':2A 'spence':5B 'the':8C,13 'time':9C,14
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['11', 'blues', 'gospel', 'folk', 'fingerstyle']
                                        'tag_date'  1985
                                     'discogstags'  ['blues']

============================== file details ==============================
                                           'mtime'  1621628672.493756  (2021-05-21 22:24:32)
                             'size'  5943581