======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '489'
                                          'artist'  'Infected Mushroom'
                                     'text_people'  ''
                                         'release'  'The Gathering'
                                           'title'  'Blue Muppet'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['trance', 'goa', 'electronic', 'psychedelic', 'psytrance']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno'
                                             'bpm'  '145.059'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Gathering'
'TBPM' (BPM (beats per minute))                     '145.059'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Blue Muppet'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Infected Mushroom'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['trance', 'goa', 'electronic', 'psychedelic', 'psytrance']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.22 dB'
'TXXX:replaygain_track_peak'                        '0.686785'

========================== row from database ==========================
                                              'id'  1309556
                                            'path'  /data/Music/Bulk/00poprockelectronic/Infected Mushroom/MBZ;#Infected Mushroom;#The Gathering;#04;#Blue Muppet.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  489
                                           'genre'  electronic-th-techno
                                        'filesize'  7839292
                                           'mtime'  1620569839
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic MBZ;#Infected Mushroom;#The Gathering;#04;#Blue electronic techno
                                      'tag_artist'  Infected Mushroom
                                     'tag_release'  The Gathering
                                       'tag_title'  Blue Muppet
                                             'bpm'  145.059
                                    'search_title'  'blue':1 'muppet':2
                                   'search_artist'  'infected':1 'mushroom':2
                                  'search_release'  'gathering':2 'the':1
                                     'search_rest'  '00poprockelectronic':1 '04':11,14 'blue':12,15 'electronic':16 'gathering':10,13 'infected':3,5 'mbz':2,4 'mushroom':6,8 'techno':17 'the':7,9
                                    'search_combo'  '00poprockelectronic':7 '04':17,20 'blue':1A,18,21 'electronic':22 'gathering':6C,16,19 'infected':3B,9,11 'mbz':8,10 'muppet':2A 'mushroom':4B,12,14 'techno':23 'the':5C,13,15
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['trance', 'goa', 'electronic', 'psychedelic', 'psytrance']
                                        'tag_date'  1999
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620569838.789688  (2021-05-09 16:17:18)
                             'size'  7839292