======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '177'
                                          'artist'  'Beegie Adair'
                                     'text_people'  ''
                                         'release'  'Martini Lounge'
                                           'title'  'Route 66'
                                           'quals'  ("['Q-HAP-3', 'Q-SYN-2', 'Q-UNU-1', 'Q-BUSY-2', 'Q-GRIT-1', 'Q-PLAY-2', "
 "'q-bass-4', 'Q-CHART-2', 'Q-JZFKS-2', 'Q-OLDST-1', 'q-drums-2', 'q-other-1', "
 "'q-piano-4', 'q-vocals-1', 'Q-HHRNBTT-1', 'Q-MIXBEAT-2', 'Q-LOCALNESS-2']")
                                      'lastfmtags'  "['jazz', 'piano', 'lounge', 'easy listening', 'christmas']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-lounge or exotica or bossa'
                                             'bpm'  '84.1'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Martini Lounge'
'TBPM' (BPM (beats per minute))                     '84.1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-lounge or exotica or bossa'
'TIT2' (Title/songname/content description)         'Route 66'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Beegie Adair'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-BUSY'                                       '2'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'piano', 'lounge', 'easy listening', 'christmas']
'TXXX:other'                                        'Martini Lounge Album Version'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.29 dB'
'TXXX:replaygain_track_peak'                        '0.561922'

========================== row from database ==========================
                                              'id'  1480243
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Martini Lounge/15. Route 66 (Martini Lounge Album Version) - Beegie Adair.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  177
                                           'genre'  prerock-jb-jazz-lounge or exotica or bossa
                                        'filesize'  7092898
                                           'mtime'  1620573996
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 15. (Martini Album Version) prerock jb jazz lounge or exotica or bossa
                                      'tag_artist'  Beegie Adair
                                     'tag_release'  Martini Lounge
                                       'tag_title'  Route 66
                                             'bpm'  84.1
                                    'search_title'  '66':2 'route':1
                                   'search_artist'  'adair':2 'beegie':1
                                  'search_release'  'lounge':2 'martini':1
                                     'search_rest'  '15':5,6 'album':9 'bossa':16 'country':4 'exotica':2 'jazz':1 'jb':13 'lounge':14 'martini':7,8 'oldies':3 'or':15 'prerock':12 'version':10,11
                                    'search_combo'  '15':11,12 '66':2A 'adair':4B 'album':15 'beegie':3B 'bossa':22 'country':10 'exotica':8 'jazz':7 'jb':19 'lounge':6C,20 'martini':5C,13,14 'oldies':9 'or':21 'prerock':18 'route':1A 'version':16,17
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-4', 'Q-MIXBEAT-2', 'Q-OLDST-1', 'Q-GRIT-1', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-CHART-2', 'q-drums-2', 'Q-SYN-2', 'q-other-1', 'Q-BUSY-2', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4']
                                      'lastfmtags'  ['jazz', 'piano', 'lounge', 'easy listening', 'christmas']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620573996.1589992  (2021-05-09 17:26:36)
                             'size'  7092898