======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '131'
                                          'artist'  'Boots Brown & His Blockbusters'
                                     'text_people'  'Boots Brown'
                                         'release'  'Out of the Cool Vol 4'
                                           'title'  'Cerveza'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['food instrumental', 'love', 'lounge', 'latin', 'bongos']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '107.8'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Out of the Cool Vol 4'
'TBPM' (BPM (beats per minute))                     '107.8'
'TCOM' (Composer)                                   'Boots Brown'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Cerveza'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Boots Brown & His Blockbusters'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Stardust'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['food instrumental', 'love', 'lounge', 'latin', 'bongos']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.33 dB'
'TXXX:replaygain_track_peak'                        '0.580749'

========================== row from database ==========================
                                              'id'  1389402
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Richie Valens - VV.AA. Out of the Cool. Vol. 04/15-boots_brown_and_his_blockbusters_-_cerveza-jce.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  131
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3174040
                                           'mtime'  1620534141
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Richie Valens VV.AA. Cool. Vol. 04 15 boots_brown_and_his_blockbusters_ _cerveza jce prerock jb jazz unsorted
                                      'tag_artist'  Boots Brown & His Blockbusters
                                     'tag_release'  Out of the Cool Vol 4
                                       'tag_title'  Cerveza
                                             'bpm'  107.8
                                    'search_title'  'cerveza':1
                                   'search_artist'  'blockbusters':4 'boots':1 'brown':2 'his':3
                                  'search_release'  '4':6 'cool':4 'of':2 'out':1 'the':3 'vol':5
                                     'search_rest'  'aa':8 'and':16 'blockbusters':18 'boots':14 'brown':15 'cerveza':19 'cool':10,11 'country':4 'exotica':2 'his':17 'jazz':1 'jb':22 'jce':20 'oldies':3 'prerock':21 'richie':5 'unsorted':23 'valens':6 'vol':12,13 'vv':7 'vvaa':9
                                    'search_combo'  '4':11C 'aa':19 'and':27 'blockbusters':5B,29 'boots':2B,25 'brown':3B,26 'cerveza':1A,30 'cool':9C,21,22 'country':15 'exotica':13 'his':4B,28 'jazz':12 'jb':33 'jce':31 'of':7C 'oldies':14 'out':6C 'prerock':32 'richie':16 'the':8C 'unsorted':34 'valens':17 'vol':10C,23,24 'vv':18 'vvaa':20
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['food instrumental', 'love', 'lounge', 'latin', 'bongos']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620534140.7826831  (2021-05-09 06:22:20)
                             'size'  3174040