======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '416'
                                          'artist'  'Iggy Pop'
                                     'text_people'  ''
                                         'release'  'Lust For Life'
                                           'title'  'Turn Blue'
                                           '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-2', "
 "'q-chart-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['proto punk', 'punk rock', 'classic rock', 'punk', 'rock']"
                                     'discogstags'  "['rock', 'alternative rock', 'art rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '9'
                                            'date'  '1977'
                                        'comments'  ''
                                           'genre'  'rock-gr-punk'
                                             'bpm'  '134.1'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Lust For Life'
'TBPM' (BPM (beats per minute))                     '134.1'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-punk'
'TDRC' (Recording time)                             '1977'
'TIT2' (Title/songname/content description)         'Turn Blue'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Iggy Pop'
'TRCK' (Track number/Position in set)               '7/9'
'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:discogstags'                                  ['rock', 'alternative rock', 'art rock']
'TXXX:lastfmtags'                                   ['proto punk', 'punk rock', 'classic rock', 'punk', '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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.54 dB'
'TXXX:replaygain_track_peak'                        '0.442204'

========================== row from database ==========================
                                              'id'  1418377
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/Iggy Pop - IggyPop/Iggy Pop - Lust For Life (Mp3 320)/07 - Turn Blue.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  416
                                           'genre'  rock-gr-punk
                                        'filesize'  16828498
                                           'mtime'  1622659006
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner IggyPop (Mp3 320) 07 rock gr punk
                                      'tag_artist'  Iggy Pop
                                     'tag_release'  Lust For Life
                                       'tag_title'  Turn Blue
                                             'bpm'  134.1
                                    'search_title'  'blue':2 'turn':1
                                   'search_artist'  'iggy':1 'pop':2
                                  'search_release'  'for':2 'life':3 'lust':1
                                     'search_rest'  '320':8,9 'garage':2 'gr':11 'iggy':12 'iggypop':5 'mp3':6,7 'pop':13 'punk':1 'rock':10 'stoner':4 'surf':3
                                    'search_combo'  '320':15,16 'blue':2A 'for':6C 'garage':9 'gr':18 'iggy':3B,19 'iggypop':12 'life':7C 'lust':5C 'mp3':13,14 'pop':4B,20 'punk':8 'rock':17 'stoner':11 'surf':10 'turn':1A
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['proto punk', 'punk rock', 'classic rock', 'punk', 'rock']
                                        'tag_date'  1977
                                     'discogstags'  ['rock', 'alternative rock', 'art rock']

============================== file details ==============================
                                           'mtime'  1622659005.7115703  (2021-06-02 20:36:45)
                             'size'  16828498