======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '411'
                                          'artist'  'Cristian Vogel'
                                     'text_people'  ''
                                         'release'  'Anima Amoris'
                                           'title'  'Absolute Time'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'Q-SYN-4', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-4', "
 "'Q-CHART-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'Q-MIXBEAT-4']")
                                      'lastfmtags'  "['electronica', 'techno', 'experimental', 'idm', 'electronic', 'minimal']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-th-techno'
                                             'bpm'  '140.9'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Anima Amoris'
'TBPM' (BPM (beats per minute))                     '140.9'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno'
'TIT2' (Title/songname/content description)         'Absolute Time'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Cristian Vogel'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '4'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '4'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['electronica', 'techno', 'experimental', 'idm', 'electronic', 'minimal']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-7.78 dB'
'TXXX:replaygain_track_peak'                        '1.186884'

========================== row from database ==========================
                                              'id'  1478736
                                            'path'  /data/Music/Bulk/00poprockelectronic/Anima Amoris [Techno] 160 MP3/Cristian Vogel - Absolute Time   Anima.Sknt.Ru.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  411
                                           'genre'  electronic-th-techno
                                        'filesize'  8241226
                                           'mtime'  1620567318
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [Techno] 160 MP3 Anima.Sknt.Ru electronic th techno
                                      'tag_artist'  Cristian Vogel
                                     'tag_release'  Anima Amoris
                                       'tag_title'  Absolute Time
                                             'bpm'  140.9
                                    'search_title'  'absolute':1 'time':2
                                   'search_artist'  'cristian':1 'vogel':2
                                  'search_release'  'amoris':2 'anima':1
                                     'search_rest'  '00poprockelectronic':1 '160':4 'anima':6 'animaskntru':9 'electronic':10 'mp3':5 'ru':8 'sknt':7 'techno':2,3 'th':11
                                    'search_combo'  '00poprockelectronic':7 '160':10 'absolute':1A 'amoris':6C 'anima':5C,12 'animaskntru':15 'cristian':3B 'electronic':16 'mp3':11 'ru':14 'sknt':13 'techno':8,9 'th':17 'time':2A 'vogel':4B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-4', 'Q-OLDST-3', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-4', 'Q-SYN-4', 'q-other-1', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  ['electronica', 'techno', 'experimental', 'idm', 'electronic', 'minimal']
                                        'tag_date'  
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620567318.3313642  (2021-05-09 15:35:18)
                             'size'  8241226