======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '202'
                                          'artist'  't.A.T.u.'
                                     'text_people'  ''
                                         'release'  '200 Po Vstrechnoy'
                                           'title'  'Ja Tvoj Vrag'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['russian', 'electronic', 'dance', 'female vocalists', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '129.979'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '200 Po Vstrechnoy'
'TBPM' (BPM (beats per minute))                     '129.979'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Ja Tvoj Vrag'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               't.A.T.u.'
'TRCK' (Track number/Position in set)               '6'
'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:lastfmtags'                                   ['russian', 'electronic', 'dance', 'female vocalists', 'pop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.63 dB'
'TXXX:replaygain_track_peak'                        '0.529368'

========================== row from database ==========================
                                              'id'  1406997
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/t.A.T.u. - /data/pool/compressed/Music/Bulk/00poprockelectronic-elec-synthy-techy/t.A.T.u/2000 Po Vstrecnoj/MBZ;#tATu;#2000 Po Vstrecnoj;#Ja Tvoj Vrag;#6.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  202
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  3244166
                                           'mtime'  1621695881
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat data pool compressed Music Bulk 00poprockelectronic elec synthy techy 2000 Vstrecnoj MBZ;#tATu;#2000 Vstrecnoj;#Ja Vrag;#6 electronic generic or radio dance
                                      'tag_artist'  t.A.T.u.
                                     'tag_release'  200 Po Vstrechnoy
                                       'tag_title'  Ja Tvoj Vrag
                                             'bpm'  129.979
                                    'search_title'  'ja':1 'tvoj':2 'vrag':3
                                   'search_artist'  'a':2 't':1,3 'tatu':5 'u':4
                                  'search_release'  '200':1 'po':2 'vstrechnoy':3
                                     'search_rest'  '00poprockelectronic':1 '2000':13,17,20,37,39 '6':26,28 'atu':36,38 'bulk':9 'compressed':7 'dance':3 'data':5 'elec':10 'electronic':29 'generic':2 'ja':22,24 'mbz':15,18,32,34 'music':8 'or':30 'pool':6 'radio':31 'synthy':11 't':33,35 'tatu':16,19 'techy':12 'trapbeat':4 'vrag':25,27 'vstrecnoj':14,21,23
                                    'search_combo'  '00poprockelectronic':12 '200':9C '2000':24,28,31,48,50 '6':37,39 'a':5B 'atu':47,49 'bulk':20 'compressed':18 'dance':14 'data':16 'elec':21 'electronic':40 'generic':13 'ja':1A,33,35 'mbz':26,29,43,45 'music':19 'or':41 'po':10C 'pool':17 'radio':42 'synthy':22 't':4B,6B,44,46 'tatu':8B,27,30 'techy':23 'trapbeat':15 'tvoj':2A 'u':7B 'vrag':3A,36,38 'vstrechnoy':11C 'vstrecnoj':25,32,34
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-3', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['russian', 'electronic', 'dance', 'female vocalists', 'pop']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621695881.2530959  (2021-05-22 17:04:41)
                             'size'  3244166