======================== unified (from filesystem) ========================
                                         'bitrate'  '157.488'
                                        'duration'  '479'
                                          'artist'  'Atmos'
                                     'text_people'  ''
                                         'release'  'Headcleaner'
                                           'title'  'Average Beverage'
                                           'quals'  ("['Q-MIXBEAT-3', 'Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'Q-OLDST-3', 'q-syn-4', 'q-bass-4', 'q-busy-3', 'q-grit-2', "
 "'q-play-3', 'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', "
 "'q-vocals-1']")
                                      'lastfmtags'  ("['psychedelic', 'progressive psytrance', 'goa', 'progressive trance', "
 "'psytrance']")
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-minimal or deephouse;set-pl-sced'
                                             'bpm'  '137.946'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 0000021C 000001DA 000033F9'
'COMM:iTunNORM:eng'                                 (' 0000021C 000001DA 000033F9 0000210B 0001C607 0001C607 00007D10 00007D08 '
 '00032D25 00032D25')
'TALB' (Album/Movie/Show title)                     'Headcleaner'
'TBPM' (BPM (beats per minute))                     '137.946'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-th-techno-minimal or deephouse', 'set-pl-sced']
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Average Beverage'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Atmos'
'TPE2' (Band/orchestra/accompaniment)               'Atmos'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['psychedelic',
 'progressive psytrance',
 'goa',
 'progressive trance',
 'psytrance']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-4.55 dB'
'TXXX:replaygain_track_peak'                        '0.881106'

========================== row from database ==========================
                                              'id'  1390310
                                            'path'  /data/Music/Bulk/00poprockelectronic/00techno-house-harder-beats/Atmos/[2000] Headcleaner/01 Average Beverage.mp3
                                         'working'  None
                                         'bitrate'  157
                                    'duration_sec'  479
                                           'genre'  electronic-th-techno-minimal or deephouse;set-pl-sced
                                        'filesize'  9484061
                                           'mtime'  1621085126
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00techno house harder beats [2000] 01 electronic th techno minimal or deephouse;set pl sced
                                      'tag_artist'  Atmos
                                     'tag_release'  Headcleaner
                                       'tag_title'  Average Beverage
                                             'bpm'  137.946
                                    'search_title'  'average':1 'beverage':2
                                   'search_artist'  'atmos':1
                                  'search_release'  'headcleaner':1
                                     'search_rest'  '00poprockelectronic':1 '00techno':2 '2000':6,7 'beats':5 'deephouse':13,15 'electronic':8 'harder':4 'house':3 'minimal':11 'or':12 'pl':17 'sced':18 'set':14,16 'techno':10 'th':9
                                    'search_combo'  '00poprockelectronic':5 '00techno':6 '2000':10,11 'atmos':3B 'average':1A 'beats':9 'beverage':2A 'deephouse':17,19 'electronic':12 'harder':8 'headcleaner':4C 'house':7 'minimal':15 'or':16 'pl':21 'sced':22 'set':18,20 'techno':14 'th':13
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  9A
                                           '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-4', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['psychedelic', 'progressive psytrance', 'goa', 'progressive trance', 'psytrance']
                                        'tag_date'  2000
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1621085125.8229694  (2021-05-15 15:25:25)
                             'size'  9484061