======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '140'
                                          'artist'  'SGT Barry Sadler'
                                     'text_people'  ''
                                         'release'  'Number 1 Hits CD2'
                                           'title'  'The Ballad Of The Green Berets'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'Q-OLDST-3', 'q-chart-3', 'q-drums-3', 'q-other-1', "
 "'q-piano-1', 'q-vocals-3', 'Q-HHRNBTT-1', 'q-mixbeat-3', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['60s', 'oldies', 'patriotic', 'pop', 'military']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '89.691'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Number 1 Hits CD2'
'TBPM' (BPM (beats per minute))                     '89.691'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TIT2' (Title/songname/content description)         'The Ballad Of The Green Berets'
'TKEY' (Initial key)                                '3B'
'TPE1' (Lead performer(s)/Soloist(s))               'SGT Barry Sadler'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '114,209'
'TXXX:Mp3gain_undo'                                 '+001,+001,N'
'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:Tracknum'                                     '17'
'TXXX:lastfmtags'                                   ['60s', 'oldies', 'patriotic', 'pop', 'military']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.52 dB'
'TXXX:replaygain_track_peak'                        '0.543637'

========================== row from database ==========================
                                              'id'  1408121
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/Number 1 hits cd 2/17 SGT Barry Sadler - The Ballad Of The Green Berets.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  140
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  3365112
                                           'mtime'  1621853888
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat hits cd 17 electronic generic or radio dance
                                      'tag_artist'  SGT Barry Sadler
                                     'tag_release'  Number 1 Hits CD2
                                       'tag_title'  The Ballad Of The Green Berets
                                             'bpm'  89.691
                                    'search_title'  'ballad':2 'berets':5 'green':4 'of':3 'the':1
                                   'search_artist'  'barry':2 'sadler':3 'sgt':1
                                  'search_release'  '1':2 'cd2':4 'hits':3 'number':1
                                     'search_rest'  '00poprockelectronic':1 'cd':6 'dance':3 'electronic':7 'generic':2 'hits':5 'or':8 'radio':9 'trapbeat':4
                                    'search_combo'  '00poprockelectronic':13 '1':10C 'ballad':2A 'barry':7B 'berets':5A 'cd':18 'cd2':12C 'dance':15 'electronic':19 'generic':14 'green':4A 'hits':11C,17 'number':9C 'of':3A 'or':20 'radio':21 'sadler':8B 'sgt':6B 'the':1A 'trapbeat':16
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-3', 'q-syn-3', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['60s', 'oldies', 'patriotic', 'pop', 'military']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621853888.1521752  (2021-05-24 12:58:08)
                             'size'  3365112