======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '297'
                                          'artist'  'FM Attack'
                                     'text_people'  ''
                                         'release'  'Astrowave'
                                           'title'  'I Saw Her Dancing'
                                           'quals'  ("['Q-HAP-4', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['electronic', 'electro', 'synthwave', 'synthpop', 'nu disco']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '02'
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'electronic-we-disco or italo'
                                             'bpm'  '121.921'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::XXX'                                         'Encoded by FLAC v1.1.4a with FLAC Frontend v1.7.1'
'COMM:ID3v1 Comment:XXX'                            'Encoded by FLAC v1.1.4a with'
'COMM:Songs-DB_Custom1:XXX'                         '2303585'
'COMM:Songs-DB_Custom2:XXX'                         'TNR 011'
'COMM:Songs-DB_Custom3:XXX'                         'Canada'
'COMM:Songs-DB_Custom4:XXX'                         'File, MP3'
'TALB' (Album/Movie/Show title)                     'Astrowave'
'TBPM' (BPM (beats per minute))                     '121.921'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-disco or italo'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'I Saw Her Dancing'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'FM Attack'
'TPE2' (Band/orchestra/accompaniment)               'FM Attack'
'TPOS' (Part of a set)                              '1'
'TPUB' (Publisher)                                  'Tonite Records'
'TRCK' (Track number/Position in set)               '02'
'TSSE' (Software/Hardware and settings used for encoding)  'MediaMonkey 3.2.0'
'TXXX:Q-HAP'                                        '4'
'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'                                   ['electronic', 'electro', 'synthwave', 'synthpop', 'nu disco']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.62 dB'
'TXXX:replaygain_track_peak'                        '0.453476'

========================== row from database ==========================
                                              'id'  1291507
                                            'path'  /data/Music/Bulk/00poprockelectronic-waves-disco/00disco-italo/FM Attack/FM Attack - Astrowave (2010)/FM Attack - I Saw Her Dancing.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  297
                                           'genre'  electronic-we-disco or italo
                                        'filesize'  12056576
                                           'mtime'  1620609035
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic waves disco 00disco italo (2010) electronic we disco or italo
                                      'tag_artist'  FM Attack
                                     'tag_release'  Astrowave
                                       'tag_title'  I Saw Her Dancing
                                             'bpm'  121.921
                                    'search_title'  'dancing':4 'her':3 'i':1 'saw':2
                                   'search_artist'  'attack':2 'fm':1
                                  'search_release'  'astrowave':1
                                     'search_rest'  '00disco':4 '00poprockelectronic':1 '2010':6,7 'disco':3 'electronic':8 'italo':5 'or':10 'waves':2 'we':9
                                    'search_combo'  '00disco':11 '00poprockelectronic':8 '2010':13,14 'astrowave':7C 'attack':6B 'dancing':4A 'disco':10 'electronic':15 'fm':5B 'her':3A 'i':1A 'italo':12 'or':17 'saw':2A 'waves':9 'we':16
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  2A
                                           '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-2', 'Q-HAP-4', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['electronic', 'electro', 'synthwave', 'synthpop', 'nu disco']
                                        'tag_date'  2010
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620609035.053157  (2021-05-10 03:10:35)
                             'size'  12056576