======================== unified (from filesystem) ========================
                                         'bitrate'  '117.339'
                                        'duration'  '144'
                                          'artist'  "Aubrey 'Moon' Mullican"
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Seven Nights to Rock'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rockabilly', 'western swing', 'country', 'all', 'hillbilly boogie']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1945'
                                        'comments'  ''
                                           'genre'  'rock-rockabilly or psychobilly'
                                             'bpm'  '85.961'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '85.961'
'TCON' (Content type, a.k.a. Genre)                 'rock-rockabilly or psychobilly'
'TDRC' (Recording time)                             '1945'
'TIT2' (Title/songname/content description)         'Seven Nights to Rock'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               "Aubrey 'Moon' Mullican"
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.40.101'
'TXXX:DeviceConformanceTemplate'                    'L1'
'TXXX:IsVBR'                                        '1'
'TXXX:Length'                                       '144560'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:WMFSDKNeeded'                                 '0.0.0.0000'
'TXXX:WMFSDKVersion'                                '11.0.5721.5145'
'TXXX:lastfmtags'                                   ['rockabilly', 'western swing', 'country', 'all', 'hillbilly boogie']
'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'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.86 dB'
'TXXX:replaygain_track_peak'                        '0.505918'

========================== row from database ==========================
                                              'id'  966398
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Old Country Music/Moon Mullican - Seven Nights to Rock.wma.mp3
                                         'working'  None
                                         'bitrate'  117
                                    'duration_sec'  144
                                           'genre'  rock-rockabilly or psychobilly
                                        'filesize'  2124604
                                           'mtime'  1620525148
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Old Country Music Rock.wma rock rockabilly or psychobilly
                                      'tag_artist'  Aubrey 'Moon' Mullican
                                     'tag_release'  None
                                       'tag_title'  Seven Nights to Rock
                                             'bpm'  85.961
                                    'search_title'  'nights':2 'rock':4 'seven':1 'to':3
                                   'search_artist'  'aubrey':1 'moon':2,3 'mullican':4
                                  'search_release'  
                                     'search_rest'  'country':4 'exotica':2 'jazz':1 'music':6 'old':5 'oldies':3 'or':12 'psychobilly':13 'rock':7,10 'rockabilly':11 'rockwma':9 'wma':8
                                    'search_combo'  'aubrey':5B 'country':12 'exotica':10 'jazz':9 'moon':6B,7B 'mullican':8B 'music':14 'nights':2A 'old':13 'oldies':11 'or':20 'psychobilly':21 'rock':4A,15,18 'rockabilly':19 'rockwma':17 'seven':1A 'to':3A 'wma':16
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-2', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rockabilly', 'western swing', 'country', 'all', 'hillbilly boogie']
                                        'tag_date'  1945
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620525148.4449174  (2021-05-09 03:52:28)
                             'size'  2124604