======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '164'
                                          'artist'  'brenda lee'
                                     'text_people'  ''
                                         'release'  'country and western songbook'
                                           'title'  "Someone To Love (The Prisoner's Song)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', '60s', 'country', 'female vocalists', 'rockabilly', 'christmas']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '87'
                                      'tracktotal'  ''
                                            'date'  '1960'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '142.708'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'country and western songbook'
'TBPM' (BPM (beats per minute))                     '142.708'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '1960'
'TIT2' (Title/songname/content description)         "Someone To Love (The Prisoner's Song)"
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'brenda lee'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '87'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['oldies', '60s', 'country', 'female vocalists', 'rockabilly', 'christmas']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.44 dB'
'TXXX:replaygain_track_peak'                        '0.583305'

========================== row from database ==========================
                                              'id'  1509610
                                            'path'  /data/Music/Bulk/00localcharacter/america - country and western songbook - second - 0716/87 - brenda lee  - Someone To Love (The Prisoner_s Song).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  164
                                           'genre'  loc-namerica-country
                                        'filesize'  2631539
                                           'mtime'  1621700250
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter america second 0716 87 Prisoner_s loc namerica
                                      'tag_artist'  brenda lee
                                     'tag_release'  country and western songbook
                                       'tag_title'  Someone To Love (The Prisoner's Song)
                                             'bpm'  142.708
                                    'search_title'  'love':3 'prisoner':6 'prisoners':8 's':7 'someone':1 'song':9,10 'the':4,5 'to':2
                                   'search_artist'  'brenda':1 'lee':2
                                  'search_release'  'and':2 'country':1 'songbook':4 'western':3
                                     'search_rest'  '0716':3 '87':4 'america':1 'loc':7 'namerica':8 'prisoner':5 's':6 'second':2
                                    'search_combo'  '0716':19 '87':20 'america':17 'and':14C 'brenda':11B 'country':13C 'lee':12B 'loc':23 'love':3A 'namerica':24 'prisoner':6A,21 'prisoners':8A 's':7A,22 'second':18 'someone':1A 'song':9A,10A 'songbook':16C 'the':4A,5A 'to':2A 'western':15C
                                    'tag_tracknum'  87
                                      'num_images'  0
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['oldies', '60s', 'country', 'female vocalists', 'rockabilly', 'christmas']
                                        'tag_date'  1960
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621700249.557098  (2021-05-22 18:17:29)
                             'size'  2631539