======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '236'
                                          'artist'  'Katrina & the Waves'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Walking on Sunshine'
                                           'quals'  ("['Q-HAP-4', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['pop', '80s', 'rock', 'new wave', 'female vocalists']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'electronic-we-disco or italo'
                                             'bpm'  '110.1'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '110.1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-disco or italo'
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         'Walking on Sunshine'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Katrina & the Waves'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '000,194'
'TXXX:Mp3gain_undo'                                 '+003,+003,N'
'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:lastfmtags'                                   ['pop', '80s', 'rock', 'new wave', 'female vocalists']
'TXXX:q-bass'                                       '4'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.15 dB'
'TXXX:replaygain_track_peak'                        '0.595794'

========================== row from database ==========================
                                              'id'  1527228
                                            'path'  /data/Music/Bulk/00poprockelectronic/Disco 70_s 80_s/Greatest Hits Of The 80's- Volume 1 to 8/Katrina & the Waves - Walking on Sunshine.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  236
                                           'genre'  electronic-we-disco or italo
                                        'filesize'  3793314
                                           'mtime'  1620569101
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Disco 70_s 80_s Greatest Hits Of The 80's Volume 1 to 8 electronic we disco or italo
                                      'tag_artist'  Katrina & the Waves
                                     'tag_release'  None
                                       'tag_title'  Walking on Sunshine
                                             'bpm'  110.1
                                    'search_title'  'on':2 'sunshine':3 'walking':1
                                   'search_artist'  'katrina':1 'the':2 'waves':3
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '1':13 '70':3 '8':15 '80':5 '80s':11 'disco':2 'electronic':16 'greatest':7 'hits':8 'italo':19 'of':9 'or':18 's':4,6 'the':10 'to':14 'volume':12 'we':17
                                    'search_combo'  '00poprockelectronic':7 '1':19 '70':9 '8':21 '80':11 '80s':17 'disco':8 'electronic':22 'greatest':13 'hits':14 'italo':25 'katrina':4B 'of':15 'on':2A 'or':24 's':10,12 'sunshine':3A 'the':5B,16 'to':20 'volume':18 'walking':1A 'waves':6B 'we':23
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-4', 'q-grit-1']
                                      'lastfmtags'  ['pop', '80s', 'rock', 'new wave', 'female vocalists']
                                        'tag_date'  1980
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620569101.4180434  (2021-05-09 16:05:01)
                             'size'  3793314