======================== unified (from filesystem) ========================
                                         'bitrate'  '191.675'
                                        'duration'  '224'
                                          'artist'  'Foo Fighters'
                                     'text_people'  'Foo Fighters'
                                         'release'  'Echoes, Silence, Patience And Grace'
                                           'title'  'Long Road To Ruin'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative rock', 'alternative', 'hard rock', 'grunge', 'rock']"
                                     'discogstags'  "['rock', 'hard rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'rock-gr-grunge'
                                             'bpm'  '98.0'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Echoes, Silence, Patience And Grace'
'TBPM' (BPM (beats per minute))                     '98.0'
'TCOM' (Composer)                                   'Foo Fighters'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-grunge'
'TDRC' (Recording time)                             '2007'
'TIT2' (Title/songname/content description)         'Long Road To Ruin'
'TKEY' (Initial key)                                '8B'
'TLEN' (Length)                                     '224880'
'TPE1' (Lead performer(s)/Soloist(s))               'Foo Fighters'
'TRCK' (Track number/Position in set)               '4'
'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'                                  ['rock', 'hard rock']
'TXXX:lastfmtags'                                   ['alternative rock', 'alternative', 'hard rock', 'grunge', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.00 dB'
'TXXX:replaygain_track_peak'                        '0.416187'

========================== row from database ==========================
                                              'id'  1295966
                                            'path'  /data/Music/Bulk/00poprockelectronic/foo fighters - echoes, silence patience and grace (2007)/04. foo fighters - long road to ruin.mp3
                                         'working'  None
                                         'bitrate'  191
                                    'duration_sec'  224
                                           'genre'  rock-gr-grunge
                                        'filesize'  5390336
                                           'mtime'  1630252686
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic foo fighters echoes, silence patience and grace (2007) 04. foo fighters long road to ruin rock gr grunge
                                      'tag_artist'  Foo Fighters
                                     'tag_release'  Echoes, Silence, Patience And Grace
                                       'tag_title'  Long Road To Ruin
                                             'bpm'  98.0
                                    'search_title'  'long':1 'road':2 'ruin':4 'to':3
                                   'search_artist'  'fighters':2 'foo':1
                                  'search_release'  'and':6 'echoes':1,2 'grace':7 'patience':5 'silence':3,4
                                     'search_rest'  '00poprockelectronic':1 '04':12,13 '2007':10,11 'and':8 'echoes':4,5 'fighters':3 'foo':2 'gr':19 'grace':9 'grunge':20 'long':14 'patience':7 'road':15 'rock':18 'ruin':17 'silence':6 'to':16
                                    'search_combo'  '00poprockelectronic':14 '04':25,26 '2007':23,24 'and':12C,21 'echoes':7C,8C,17,18 'fighters':6B,16 'foo':5B,15 'gr':32 'grace':13C,22 'grunge':33 'long':1A,27 'patience':11C,20 'road':2A,28 'rock':31 'ruin':4A,30 'silence':9C,10C,19 'to':3A,29
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  8B
                                           '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-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['alternative rock', 'alternative', 'hard rock', 'grunge', 'rock']
                                        'tag_date'  2007
                                     'discogstags'  ['rock', 'hard rock']

============================== file details ==============================
                                           'mtime'  1630252686.4683204  (2021-08-29 17:58:06)
                             'size'  5390336