======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '202'
                                          'artist'  'Dick Hyman'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'In the heat of the night'
                                           '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-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['moog', 'jazz', 'lounge', 'space age pop', 'piano', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1968'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '144.955'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '144.955'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1968'
'TIT2' (Title/songname/content description)         'In the heat of the night'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dick Hyman'
'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'                                   ['moog', 'jazz', 'lounge', 'space age pop', 'piano', 'electronic']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.97 dB'
'TXXX:replaygain_track_peak'                        '0.559714'

========================== row from database ==========================
                                              'id'  1523886
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/mirrors - reflections of today  (and _the group_)  (1968)/02  In the heat of the night - Dick Hyman and _The group_.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  202
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3243789
                                           'mtime'  1620537868
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country mirrors reflections today (and _the group_) (1968) 02 and _The group_ prerock jb jazz unsorted
                                      'tag_artist'  Dick Hyman
                                     'tag_release'  None
                                       'tag_title'  In the heat of the night
                                             'bpm'  144.955
                                    'search_title'  'heat':3 'in':1 'night':5 'of':4 'the':2
                                   'search_artist'  'dick':1 'hyman':2
                                  'search_release'  
                                     'search_rest'  '1968':13,14 'and':8,9 'country':4 'exotica':2 'group':11,12 'jazz':1 'jb':16 'mirrors':5 'oldies':3 'prerock':15 'reflections':6 'the':10 'today':7 'unsorted':17
                                    'search_combo'  '1968':20,21 'and':15,16 'country':11 'dick':6B 'exotica':9 'group':18,19 'heat':3A 'hyman':7B 'in':1A 'jazz':8 'jb':23 'mirrors':12 'night':5A 'of':4A 'oldies':10 'prerock':22 'reflections':13 'the':2A,17 'today':14 'unsorted':24
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           '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-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['moog', 'jazz', 'lounge', 'space age pop', 'piano', 'electronic']
                                        'tag_date'  1968
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620537867.632743  (2021-05-09 07:24:27)
                             'size'  3243789