======================== unified (from filesystem) ========================
                                         'bitrate'  '159.988'
                                        'duration'  '343'
                                          'artist'  'One System'
                                     'text_people'  ''
                                         'release'  'Italo Disco "The Legend" Vol 0'
                                           'title'  'Life is Very Short'
                                           'quals'  ("['Q-HAP-4', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['gianfranco bortolotti', 'italo disco', 'electronic', 'pop', 'synthpop']"
                                     'discogstags'  "['italo-disco', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-we-disco or italo'
                                             'bpm'  '113.772'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Italo Disco "The Legend" Vol 0'
'TBPM' (BPM (beats per minute))                     '113.772'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-disco or italo'
'TIT2' (Title/songname/content description)         'Life is Very Short'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'One System'
'TRCK' (Track number/Position in set)               '4'
'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'                                  ['italo-disco', 'electronic']
'TXXX:lastfmtags'                                   ['gianfranco bortolotti', 'italo disco', 'electronic', 'pop', 'synthpop']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+4.21 dB'
'TXXX:replaygain_track_peak'                        '0.314053'

========================== row from database ==========================
                                              'id'  1322947
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/02 - One System - Life is Very Short.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  343
                                           'genre'  electronic-we-disco or italo
                                        'filesize'  6868894
                                           'mtime'  1620572538
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 02 electronic we disco italo
                                      'tag_artist'  One System
                                     'tag_release'  Italo Disco "The Legend" Vol 0
                                       'tag_title'  Life is Very Short
                                             'bpm'  113.772
                                    'search_title'  'is':2 'life':1 'short':4 'very':3
                                   'search_artist'  'one':1 'system':2
                                  'search_release'  '0':6 'disco':2 'italo':1 'legend':4 'the':3 'vol':5
                                     'search_rest'  '00poprockelectronic':1 'disco':9 'electronic':7 'files':5,6 'italo':10 'loose':3,4 'unsorted':2 'we':8
                                    'search_combo'  '0':12C '00poprockelectronic':13 'disco':8C,21 'electronic':19 'files':17,18 'is':2A 'italo':7C,22 'legend':10C 'life':1A 'loose':15,16 'one':5B 'short':4A 'system':6B 'the':9C 'unsorted':14 'very':3A 'vol':11C 'we':20
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-4', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['gianfranco bortolotti', 'italo disco', 'electronic', 'pop', 'synthpop']
                                        'tag_date'  
                                     'discogstags'  ['italo-disco', 'electronic']

============================== file details ==============================
                                           'mtime'  1620572538.029251  (2021-05-09 17:02:18)
                             'size'  6868894