======================== unified (from filesystem) ========================
                                         'bitrate'  '227.077'
                                        'duration'  '122'
                                          'artist'  'Kitty, Daisy & Lewis'
                                     'text_people'  ''
                                         'release'  'Kitty, Daisy & Lewis'
                                           'title'  'Honolulu rock-a roll-a'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock and roll', 'country', '50s', 'rockabilly', 'rythm and blues']"
                                     'discogstags'  ("['rock', 'blues', 'folk, world, & country', 'country blues', 'rock & roll', "
 "'blues rock', 'bluegrass', 'rockabilly']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-swing'
                                             'bpm'  '91.639'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Kitty, Daisy & Lewis'
'TBPM' (BPM (beats per minute))                     '91.639'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-soft-swing'
'TCOP' (Copyright message)                          '2008 Sunday Best Recordings'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'Honolulu rock-a roll-a'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Kitty, Daisy & Lewis'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Pias UK'
'TRCK' (Track number/Position in set)               '4'
'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:discogstags'                                  ['rock',
 'blues',
 'folk, world, & country',
 'country blues',
 'rock & roll',
 'blues rock',
 'bluegrass',
 'rockabilly']
'TXXX:lastfmtags'                                   ['rock and roll', 'country', '50s', 'rockabilly', 'rythm and blues']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.75 dB'
'TXXX:replaygain_track_peak'                        '0.460565'

========================== row from database ==========================
                                              'id'  1265554
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Kitty, Daisy & Lewis - Daisy and Lewis Kitty/daisy and lewis kitty/kitty, daisy and lewis/kitty, daisy & lewis - 04 - honolulu rock-a roll-a.mp3
                                         'working'  None
                                         'bitrate'  227
                                    'duration_sec'  122
                                           'genre'  prerock-jb-jazz-soft-swing
                                        'filesize'  3524090
                                           'mtime'  1620530775
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country and daisy and lewis kitty kitty, daisy and lewis kitty, daisy lewis 04 honolulu prerock jb jazz soft swing
                                      'tag_artist'  Kitty, Daisy & Lewis
                                     'tag_release'  Kitty, Daisy & Lewis
                                       'tag_title'  Honolulu rock-a roll-a
                                             'bpm'  91.639
                                    'search_title'  'a':3,6 'honolulu':1 'rock':2 'rocka':4 'roll':5 'rolla':7
                                   'search_artist'  'daisy':3 'kitty':1,2 'lewis':4
                                  'search_release'  'daisy':3 'kitty':1,2 'lewis':4
                                     'search_rest'  'and':5 'country':4 'daisy':6 'exotica':2 'honolulu':10 'jazz':1 'jb':12 'kitty':8,9 'lewis':7 'oldies':3 'prerock':11 'soft':13 'swing':14
                                    'search_combo'  'a':3A,6A 'and':20 'country':19 'daisy':10B,14C,21 'exotica':17 'honolulu':1A,25 'jazz':16 'jb':27 'kitty':8B,9B,12C,13C,23,24 'lewis':11B,15C,22 'oldies':18 'prerock':26 'rock':2A 'rocka':4A 'roll':5A 'rolla':7A 'soft':28 'swing':29
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rock and roll', 'country', '50s', 'rockabilly', 'rythm and blues']
                                        'tag_date'  2008
                                     'discogstags'  ['rock', 'blues', 'folk, world, & country', 'country blues', 'rock & roll', 'blues rock', 'bluegrass', 'rockabilly']

============================== file details ==============================
                                           'mtime'  1620530775.04102  (2021-05-09 05:26:15)
                             'size'  3524090