======================== unified (from filesystem) ========================
                                         'bitrate'  '164.766'
                                        'duration'  '302'
                                          'artist'  'The Alan Parsons Project'
                                     'text_people'  ''
                                         'release'  'The Turn Of A Friendly Card'
                                           'title'  'Time'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['80s', 'electronic', 'rock', 'progressive rock', 'classic rock']"
                                     'discogstags'  "['electronic', 'rock', 'pop rock', 'prog rock', 'symphonic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '6'
                                            'date'  '1984'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive;set-pl-billboard'
                                             'bpm'  '145.1'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunes_CDDB_IDs:eng'                          '6+9FE5F7605BBCCD18D6B41AD3865BEE50+440128'
'TALB' (Album/Movie/Show title)                     'The Turn Of A Friendly Card'
'TBPM' (BPM (beats per minute))                     '145.1'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-progressive', 'set-pl-billboard']
'TDRC' (Recording time)                             '1984'
'TENC' (Encoded by)                                 'iTunes X v2.0.4'
'TIT2' (Title/songname/content description)         'Time'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Alan Parsons Project'
'TRCK' (Track number/Position in set)               '3/6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'rock', 'pop rock', 'prog rock', 'symphonic rock']
'TXXX:lastfmtags'                                   ['80s', 'electronic', 'rock', 'progressive rock', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.51 dB'
'TXXX:replaygain_track_peak'                        '0.705765'

========================== row from database ==========================
                                              'id'  1414771
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/The Alan Parsons Project - Alan Parsons Project/The Turn Of A Friendly Card/Alan Parsons Project - Time.mp3
                                         'working'  None
                                         'bitrate'  164
                                    'duration_sec'  302
                                           'genre'  rock-cppex-progressive;set-pl-billboard
                                        'filesize'  6233857
                                           'mtime'  1620737766
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy rock cppex progressive;set pl billboard
                                      'tag_artist'  The Alan Parsons Project
                                     'tag_release'  The Turn Of A Friendly Card
                                       'tag_title'  Time
                                             'bpm'  145.1
                                    'search_title'  'time':1
                                   'search_artist'  'alan':2 'parsons':3 'project':4 'the':1
                                  'search_release'  'a':4 'card':6 'friendly':5 'of':3 'the':1 'turn':2
                                     'search_rest'  'billboard':9 'classicprogpsy':1 'cppex':3 'pl':8 'progressive':4,6 'rock':2 'set':5,7
                                    'search_combo'  'a':9C 'alan':3B 'billboard':20 'card':11C 'classicprogpsy':12 'cppex':14 'friendly':10C 'of':8C 'parsons':4B 'pl':19 'progressive':15,17 'project':5B 'rock':13 'set':16,18 'the':2B,6C 'time':1A 'turn':7C
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'electronic', 'rock', 'progressive rock', 'classic rock']
                                        'tag_date'  1984
                                     'discogstags'  ['electronic', 'rock', 'pop rock', 'prog rock', 'symphonic rock']

============================== file details ==============================
                                           'mtime'  1620737766.3699439  (2021-05-11 14:56:06)
                             'size'  6233857