======================== unified (from filesystem) ========================
                                         'bitrate'  '96.784'
                                        'duration'  '190'
                                          'artist'  'The Tennessee Ramblers'
                                     'text_people'  ''
                                         'release'  'Appalachian Stompdown'
                                           'title'  'Arkansas Traveler'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '19'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '145.580'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Appalachian Stompdown'
'TBPM' (BPM (beats per minute))                     '145.580'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         'Arkansas Traveler'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Tennessee Ramblers'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '2'
'TRCK' (Track number/Position in set)               '19'
'TXXX:Encoding Params'                              'vers'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   'country'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.29 dB'
'TXXX:replaygain_track_peak'                        '0.561117'

========================== row from database ==========================
                                              'id'  1111322
                                            'path'  /data/Music/Bulk/00localcharacter/Appalachian Stompdown/Appalachian Stompdown - Disc B/2-19 Arkansas Traveler.mp3
                                         'working'  None
                                         'bitrate'  96
                                    'duration_sec'  190
                                           'genre'  loc-namerica-country
                                        'filesize'  2302608
                                           'mtime'  1621629645
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Disc B 2 19 loc namerica country
                                      'tag_artist'  The Tennessee Ramblers
                                     'tag_release'  Appalachian Stompdown
                                       'tag_title'  Arkansas Traveler
                                             'bpm'  145.58
                                    'search_title'  'arkansas':1 'traveler':2
                                   'search_artist'  'ramblers':3 'tennessee':2 'the':1
                                  'search_release'  'appalachian':1 'stompdown':2
                                     'search_rest'  '19':4 '2':3 'b':2 'country':7 'disc':1 'loc':5 'namerica':6
                                    'search_combo'  '19':11 '2':10 'appalachian':6C 'arkansas':1A 'b':9 'country':14 'disc':8 'loc':12 'namerica':13 'ramblers':5B 'stompdown':7C 'tennessee':4B 'the':3B 'traveler':2A
                                    'tag_tracknum'  19
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['country']
                                        'tag_date'  2006
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629644.667869  (2021-05-21 22:40:44)
                             'size'  2302608