======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '177'
                                          'artist'  'The Morning Dew'
                                     'text_people'  ''
                                         'release'  "Tape No111 - Let's Live For Today"
                                           'title'  'Sing Out'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HAP-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock', 'psychedelic rock', 'psychedelic', 'garage', 'smoke']"
                                     'discogstags'  "['folk, world, & country', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '1967'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes'
                                             'bpm'  '90.5'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM::XXX'                                         'http://garagetapes.blogspot.com/'
'TALB' (Album/Movie/Show title)                     "Tape No111 - Let's Live For Today"
'TBPM' (BPM (beats per minute))                     '90.5'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes']
'TDRC' (Recording time)                             '1967'
'TIT2' (Title/songname/content description)         'Sing Out'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Morning Dew'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '13'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:country'                                      'US'
'TXXX:discogstags'                                  ['folk, world, & country', 'folk']
'TXXX:lastfmtags'                                   ['rock', 'psychedelic rock', 'psychedelic', 'garage', 'smoke']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'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'                        '+0.86 dB'
'TXXX:replaygain_track_peak'                        '0.493791'
'TXXX:tracknum'                                     '13'

========================== row from database ==========================
                                              'id'  502877
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT111/13 - The Morning Dew - Sing Out (1967 US).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  177
                                           'genre'  rock-gr-garage;set-pl-garagetapes
                                        'filesize'  4263946
                                           'mtime'  1620384349
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT111 13 (1967 US) rock gr garage;set pl garagetapes
                                      'tag_artist'  The Morning Dew
                                     'tag_release'  Tape No111 - Let's Live For Today
                                       'tag_title'  Sing Out
                                             'bpm'  90.5
                                    'search_title'  'out':2 'sing':1
                                   'search_artist'  'dew':3 'morning':2 'the':1
                                  'search_release'  'for':7 'let':3 'lets':5 'live':6 'no111':2 's':4 'tape':1 'today':8
                                     'search_rest'  '1967':6,7 'blogspot':2 'com':3 'garage':12,14 'garagetapes':1,17 'garagetapesblogspotcom':4 'gr':11 'gt111':5 'pl':16 'rock':10 'set':13,15 'us':8,9
                                    'search_combo'  '1967':19,20 'blogspot':15 'com':16 'dew':5B 'for':12C 'garage':25,27 'garagetapes':14,30 'garagetapesblogspotcom':17 'gr':24 'gt111':18 'let':8C 'lets':10C 'live':11C 'morning':4B 'no111':7C 'out':2A 'pl':29 'rock':23 's':9C 'set':26,28 'sing':1A 'tape':6C 'the':3B 'today':13C 'us':21,22
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'psychedelic rock', 'psychedelic', 'garage', 'smoke']
                                        'tag_date'  1967
                                     'discogstags'  ['folk, world, & country', 'folk']

============================== file details ==============================
                                           'mtime'  1620384348.7861931  (2021-05-07 12:45:48)
                             'size'  4263946