======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '228'
                                          'artist'  'Stack Waddy'
                                     'text_people'  ''
                                         'release'  'Bugger Off!'
                                           'title'  "It Ain't Easy"
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-3', "
 "'Q-CHART-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['blues rock', 'proto metal', 'hard rock', 'psychedelic rock', 'early metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '132.9'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Bugger Off!'
'TBPM' (BPM (beats per minute))                     '132.9'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         "It Ain't Easy"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Stack Waddy'
'TPE2' (Band/orchestra/accompaniment)               'Stack Waddy'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'See For Miles'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '1'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['blues rock', 'proto metal', 'hard rock', 'psychedelic rock', 'early metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-4.58 dB'
'TXXX:replaygain_track_peak'                        '0.955321'

========================== row from database ==========================
                                              'id'  1495945
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Stack Waddy - [1972] Bugger Off!/09 - it ain_t easy.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  228
                                           'genre'  rock-cppex
                                        'filesize'  3660445
                                           'mtime'  1636921797
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy [1972] 09 it ain_t easy rock cppex
                                      'tag_artist'  Stack Waddy
                                     'tag_release'  Bugger Off!
                                       'tag_title'  It Ain't Easy
                                             'bpm'  132.9
                                    'search_title'  'ain':2 'aint':4 'easy':5 'it':1 't':3
                                   'search_artist'  'stack':1 'waddy':2
                                  'search_release'  'bugger':1 'off':2
                                     'search_rest'  '1972':2,3 'ain':5 'classicprogpsy':1 'cppex':9 'easy':7 'it':4 'rock':8 't':6
                                    'search_combo'  '1972':11,12 'ain':2A,14 'aint':4A 'bugger':8C 'classicprogpsy':10 'cppex':18 'easy':5A,16 'it':1A,13 'off':9C 'rock':17 'stack':6B 't':3A,15 'waddy':7B
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-1', 'q-drums-3', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-3']
                                      'lastfmtags'  ['blues rock', 'proto metal', 'hard rock', 'psychedelic rock', 'early metal']
                                        'tag_date'  1971
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1636921797.1340532  (2021-11-14 21:29:57)
                             'size'  3660445