======================== unified (from filesystem) ========================
                                         'bitrate'  '191.974'
                                        'duration'  '196'
                                          'artist'  'Bolz Bolz'
                                     'text_people'  ''
                                         'release'  'Space Night, Volume 4 (disc 1: Alpha)'
                                           'title'  'Music'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['elektro', 'electroclash', 'electro', 'electronic', 'techno']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-th-techno'
                                             'bpm'  '88.554'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Space Night, Volume 4 (disc 1: Alpha)'
'TBPM' (BPM (beats per minute))                     '88.554'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno'
'TIT2' (Title/songname/content description)         'Music'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bolz Bolz'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '2'
'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'                                   ['elektro', 'electroclash', 'electro', 'electronic', 'techno']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.15 dB'
'TXXX:replaygain_track_peak'                        '0.592749'

========================== row from database ==========================
                                              'id'  1307621
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/06 - Bolz Bolz - Music.mp3
                                         'working'  None
                                         'bitrate'  191
                                    'duration_sec'  196
                                           'genre'  electronic-th-techno
                                        'filesize'  4712556
                                           'mtime'  1620572580
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 06 electronic th techno
                                      'tag_artist'  Bolz Bolz
                                     'tag_release'  Space Night, Volume 4 (disc 1: Alpha)
                                       'tag_title'  Music
                                             'bpm'  88.554
                                    'search_title'  'music':1
                                   'search_artist'  'bolz':1
                                  'search_release'  '1':8,9 '4':5 'alpha':10,11 'disc':6,7 'night':2,3 'space':1 'volume':4
                                     'search_rest'  '00poprockelectronic':1 'electronic':7 'files':5,6 'loose':3,4 'techno':9 'th':8 'unsorted':2
                                    'search_combo'  '00poprockelectronic':14 '1':10C,11C '4':7C 'alpha':12C,13C 'bolz':2B 'disc':8C,9C 'electronic':20 'files':18,19 'loose':16,17 'music':1A 'night':4C,5C 'space':3C 'techno':22 'th':21 'unsorted':15 'volume':6C
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-1', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['elektro', 'electroclash', 'electro', 'electronic', 'techno']
                                        'tag_date'  
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620572580.031767  (2021-05-09 17:03:00)
                             'size'  4712556