======================== unified (from filesystem) ========================
                                         'bitrate'  '174.58'
                                        'duration'  '229'
                                          'artist'  'Fra Lippo Lippi'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Shouldn't Have to Be Like That"
                                           'quals'  ("['Q-HAP-4', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-3', 'Q-PLAY-3', 'q-bass-3', 'q-busy-3', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-3', 'q-other-2', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['new wave', 'post-punk', '80s', 'pop', 'norwegian']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'electronic-we-disco or italo'
                                             'bpm'  '115.1'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '115.1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-disco or italo'
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         "Shouldn't Have to Be Like That"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Fra Lippo Lippi'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '000,190'
'TXXX:Mp3gain_undo'                                 '+002,+002,N'
'TXXX:Q-HAP'                                        '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['new wave', 'post-punk', '80s', 'pop', 'norwegian']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.28 dB'
'TXXX:replaygain_track_peak'                        '0.686113'

========================== row from database ==========================
                                              'id'  1527846
                                            'path'  /data/Music/Bulk/00poprockelectronic/Disco 70_s 80_s/Best Sellers Of The 80's Vol 1/Fra Lippo Lippi - Shouldn_t Have to Be Like That.mp3
                                         'working'  None
                                         'bitrate'  174
                                    'duration_sec'  229
                                           'genre'  electronic-we-disco or italo
                                        'filesize'  5016261
                                           'mtime'  1620569071
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Disco 70_s 80_s Best Sellers Of The 80's Vol 1 Shouldn_t electronic we disco or italo
                                      'tag_artist'  Fra Lippo Lippi
                                     'tag_release'  None
                                       'tag_title'  Shouldn't Have to Be Like That
                                             'bpm'  115.1
                                    'search_title'  'be':6 'have':4 'like':7 'shouldn':1 'shouldnt':3 't':2 'that':8 'to':5
                                   'search_artist'  'fra':1 'lippi':3 'lippo':2
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '1':13 '70':3 '80':5 '80s':11 'best':7 'disco':2 'electronic':16 'italo':19 'of':9 'or':18 's':4,6 'sellers':8 'shouldn':14 't':15 'the':10 'vol':12 'we':17
                                    'search_combo'  '00poprockelectronic':12 '1':24 '70':14 '80':16 '80s':22 'be':6A 'best':18 'disco':13 'electronic':27 'fra':9B 'have':4A 'italo':30 'like':7A 'lippi':11B 'lippo':10B 'of':20 'or':29 's':15,17 'sellers':19 'shouldn':1A,25 'shouldnt':3A 't':2A,26 'that':8A 'the':21 'to':5A 'vol':23 'we':28
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-3', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-4', 'Q-PLAY-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['new wave', 'post-punk', '80s', 'pop', 'norwegian']
                                        'tag_date'  1980
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620569071.1359167  (2021-05-09 16:04:31)
                             'size'  5016261