======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '178'
                                          'artist'  'In Full Color'
                                     'text_people'  ''
                                         'release'  '538 Dance Smash Hits (Winter 2'
                                           'title'  'Into My Life'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['trance', 'pop', 'djable', 'female vocals', 'eurodance']"
                                     'discogstags'  "['trance', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '136.920'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '538 Dance Smash Hits (Winter 2'
'TBPM' (BPM (beats per minute))                     '136.920'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Into My Life'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'In Full Color'
'TRCK' (Track number/Position in set)               '9'
'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'                                  ['trance', 'electronic']
'TXXX:lastfmtags'                                   ['trance', 'pop', 'djable', 'female vocals', 'eurodance']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.55 dB'
'TXXX:replaygain_track_peak'                        '0.512755'

========================== row from database ==========================
                                              'id'  1456489
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/00mixable/Unsorted/In Full Color__538 Dance Smash Hits (Winter 2__09 - Into My Life.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  178
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  4287709
                                           'mtime'  1621695810
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat 00mixable Unsorted Color__538 2__09 electronic generic radio dance
                                      'tag_artist'  In Full Color
                                     'tag_release'  538 Dance Smash Hits (Winter 2
                                       'tag_title'  Into My Life
                                             'bpm'  136.92
                                    'search_title'  'into':1 'life':3 'my':2
                                   'search_artist'  'color':3 'full':2 'in':1
                                  'search_release'  '2':7 '538':1 'dance':2 'hits':4 'smash':3 'winter':5,6
                                     'search_rest'  '00mixable':5 '00poprockelectronic':1 '09':10 '2':9 '538':8 'color':7 'dance':3 'electronic':11 'generic':2 'radio':12 'trapbeat':4 'unsorted':6
                                    'search_combo'  '00mixable':18 '00poprockelectronic':14 '09':23 '2':13C,22 '538':7C,21 'color':6B,20 'dance':8C,16 'electronic':24 'full':5B 'generic':15 'hits':10C 'in':4B 'into':1A 'life':3A 'my':2A 'radio':25 'smash':9C 'trapbeat':17 'unsorted':19 'winter':11C,12C
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['trance', 'pop', 'djable', 'female vocals', 'eurodance']
                                        'tag_date'  2001
                                     'discogstags'  ['trance', 'electronic']

============================== file details ==============================
                                           'mtime'  1621695809.9751449  (2021-05-22 17:03:29)
                             'size'  4287709