======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '222'
                                          'artist'  'The Jug Heads'
                                     'text_people'  ''
                                         'release'  'Hi-Fi Sounds for Hounds'
                                           'title'  'School Days - Beer Barrel Polka - Mockingbird Hill'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '136.551'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Hi-Fi Sounds for Hounds'
'TBPM' (BPM (beats per minute))                     '136.551'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-unsorted', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TDRC' (Recording time)                             '1957'
'TENC' (Encoded by)                                 'Basic Hip Digital Oddio'
'TIT2' (Title/songname/content description)         'School Days - Beer Barrel Polka - Mockingbird Hill'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Jug Heads'
'TPE2' (Band/orchestra/accompaniment)               'The Jug Heads'
'TRCK' (Track number/Position in set)               '12'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'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'                        '+2.03 dB'
'TXXX:replaygain_track_peak'                        '0.369983'

========================== row from database ==========================
                                              'id'  770139
                                            'path'  /data/Music/Bulk/0nonmusic/Hi-Fi Sounds for Hounds (San Francisco Records, 1957) [320k]/12 The Jug Heads - School Days ~ Beer Barrel Polka ~ Mockingbird Hill.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  222
                                           'genre'  electronic-unsorted;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  8904787
                                           'mtime'  1620355940
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic (San Francisco Records, 1957) [320k] 12 ~ ~ electronic unsorted;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  The Jug Heads
                                     'tag_release'  Hi-Fi Sounds for Hounds
                                       'tag_title'  School Days - Beer Barrel Polka - Mockingbird Hill
                                             'bpm'  136.551
                                    'search_title'  'barrel':4 'beer':3 'days':2 'hill':7 'mockingbird':6 'polka':5 'school':1
                                   'search_artist'  'heads':3 'jug':2 'the':1
                                  'search_release'  'fi':2 'for':5 'hi':1 'hifi':3 'hounds':6 'sounds':4
                                     'search_rest'  '0nonmusic':1 '1957':7,8 '320k':9,10 'electronic':11 'francisco':4 'mor':21 'pl':16 'records':5,6 'san':2,3 'set':13,15,18,20 'shirleyspinoza':17,19 'unsorted':12,14
                                    'search_combo'  '0nonmusic':17 '1957':23,24 '320k':25,26 'barrel':4A 'beer':3A 'days':2A 'electronic':27 'fi':12C 'for':15C 'francisco':20 'heads':10B 'hi':11C 'hifi':13C 'hill':7A 'hounds':16C 'jug':9B 'mockingbird':6A 'mor':37 'pl':32 'polka':5A 'records':21,22 'san':18,19 'school':1A 'set':29,31,34,36 'shirleyspinoza':33,35 'sounds':14C 'the':8B 'unsorted':28,30
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620355940.252745  (2021-05-07 04:52:20)
                             'size'  8904787