======================== unified (from filesystem) ========================
                                         'bitrate'  '272.266'
                                        'duration'  '4'
                                          'artist'  'frenzal rhomb'
                                     'text_people'  ''
                                         'release'  'not so tough now'
                                           'title'  'sinatra sings secret track'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['skate punk', 'punk rock', 'pop punk', 'punk', 'australian']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'rock-gr-punk'
                                             'bpm'  '143.416'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'not so tough now'
'TBPM' (BPM (beats per minute))                     '143.416'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-punk'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'sinatra sings secret track'
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'frenzal rhomb'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['skate punk', 'punk rock', 'pop punk', 'punk', 'australian']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.39 dB'
'TXXX:replaygain_track_peak'                        '0.279672'

========================== row from database ==========================
                                              'id'  1418011
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/Frenzal Rhomb/Frenzal_Rhomb-Not_So_Tough_Now-1996-FTS/42-frenzal_rhomb-sinatra_sings_secret_track-fts.mp3
                                         'working'  None
                                         'bitrate'  276
                                    'duration_sec'  4
                                           'genre'  rock-gr-punk
                                        'filesize'  140507
                                           'mtime'  1622658977
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner Frenzal Rhomb Frenzal_Rhomb Not_So_Tough_Now 1996 FTS 42 frenzal_rhomb sinatra_sings_secret_track fts rock gr punk
                                      'tag_artist'  frenzal rhomb
                                     'tag_release'  not so tough now
                                       'tag_title'  sinatra sings secret track
                                             'bpm'  143.416
                                    'search_title'  'secret':3 'sinatra':1 'sings':2 'track':4
                                   'search_artist'  'frenzal':1 'rhomb':2
                                  'search_release'  'not':1 'now':4 'so':2 'tough':3
                                     'search_rest'  '1996':13 '42':15 'frenzal':5,7 'fts':14 'garage':2 'gr':21 'not':9 'now':12 'punk':1 'rhomb':6,8 'rock':20 'secret':18 'sinatra':16 'sings':17 'so':10 'stoner':4 'surf':3 'tough':11 'track':19
                                    'search_combo'  '1996':23 '42':25 'frenzal':5B,15,17 'fts':24 'garage':12 'gr':31 'not':7C,19 'now':10C,22 'punk':11 'rhomb':6B,16,18 'rock':30 'secret':3A,28 'sinatra':1A,26 'sings':2A,27 'so':8C,20 'stoner':14 'surf':13 'tough':9C,21 'track':4A,29
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['skate punk', 'punk rock', 'pop punk', 'punk', 'australian']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622658977.1094978  (2021-06-02 20:36:17)
                             'size'  140507