======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '615'
                                          'artist'  'Push'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Universal Nation (Extended)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['dance', 'trance', 'electronica', 'electronic', 'progressive trance']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '00'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '138.040'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'PCNT' (Play counter)                               PCNT(count=0)
'TBPM' (BPM (beats per minute))                     '138.040'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TIT2' (Title/songname/content description)         'Universal Nation (Extended)'
'TKEY' (Initial key)                                '2A'
'TLEN' (Length)                                     '615000'
'TPE1' (Lead performer(s)/Soloist(s))               'Push'
'TRCK' (Track number/Position in set)               '00'
'TXXX:Q-HAP'                                        '3'
'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'                                   ['dance', 'trance', 'electronica', 'electronic', 'progressive trance']
'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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.02 dB'
'TXXX:replaygain_track_peak'                        '0.771808'

========================== row from database ==========================
                                              'id'  1316784
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Push - Universal Nation (Extended Mix A1 Vinyl).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  615
                                           'genre'  electronic-unsorted
                                        'filesize'  9850752
                                           'mtime'  1621696781
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] Mix A1 Vinyl) electronic unsorted
                                      'tag_artist'  Push
                                     'tag_release'  None
                                       'tag_title'  Universal Nation (Extended)
                                             'bpm'  138.04
                                    'search_title'  'extended':3,4 'nation':2 'universal':1
                                   'search_artist'  'push':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'a1':8 'electronic':11 'files':5,6 'loose':3,4 'mix':7 'unsorted':2 'vinyl':9,10
                                    'search_combo'  '00poprockelectronic':6 'a1':13 'electronic':16 'extended':3A,4A 'files':10,11 'loose':8,9 'mix':12 'nation':2A 'push':5B 'universal':1A 'unsorted':7 'vinyl':14,15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2A
                                           '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-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'trance', 'electronica', 'electronic', 'progressive trance']
                                        'tag_date'  
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1621696780.5263581  (2021-05-22 17:19:40)
                             'size'  9850752