======================== unified (from filesystem) ========================
                                         'bitrate'  '187.406'
                                        'duration'  '249'
                                          'artist'  'Richard Groove Holmes'
                                     'text_people'  ''
                                         'release'  'Blue Break Beats'
                                           'title'  'Grooving With Mr G'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'hammond', 'funk', 'organ', 'funky']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '102.385'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Blue Break Beats'
'TBPM' (BPM (beats per minute))                     '102.385'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TIT2' (Title/songname/content description)         'Grooving With Mr G'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Richard Groove Holmes'
'TRCK' (Track number/Position in set)               '1'
'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'                                   ['jazz', 'hammond', 'funk', 'organ', 'funky']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.17 dB'
'TXXX:replaygain_track_peak'                        '0.571583'

========================== row from database ==========================
                                              'id'  782023
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Blue Break Beats/Richard Groove Holmes - Grooving With Mr G.mp3
                                         'working'  None
                                         'bitrate'  187
                                    'duration_sec'  249
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  5856193
                                           'mtime'  1620528287
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country prerock jb jazz unsorted
                                      'tag_artist'  Richard Groove Holmes
                                     'tag_release'  Blue Break Beats
                                       'tag_title'  Grooving With Mr G
                                             'bpm'  102.385
                                    'search_title'  'g':4 'grooving':1 'mr':3 'with':2
                                   'search_artist'  'groove':2 'holmes':3 'richard':1
                                  'search_release'  'beats':3 'blue':1 'break':2
                                     'search_rest'  'country':4 'exotica':2 'jazz':1 'jb':6 'oldies':3 'prerock':5 'unsorted':7
                                    'search_combo'  'beats':10C 'blue':8C 'break':9C 'country':14 'exotica':12 'g':4A 'groove':6B 'grooving':1A 'holmes':7B 'jazz':11 'jb':16 'mr':3A 'oldies':13 'prerock':15 'richard':5B 'unsorted':17 'with':2A
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'hammond', 'funk', 'organ', 'funky']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528287.3981652  (2021-05-09 04:44:47)
                             'size'  5856193