======================== unified (from filesystem) ========================
                                         'bitrate'  '194.702'
                                        'duration'  '173'
                                          'artist'  'Buck Owens'
                                     'text_people'  ''
                                         'release'  'Country Roads'
                                           'title'  'Swinging Doors'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-3', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['classic country', 'americana', 'country', 'bakersfield sound', 'honky tonk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1945'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '117.740'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Country Roads'
'TBPM' (BPM (beats per minute))                     '117.740'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '1945'
'TIT2' (Title/songname/content description)         'Swinging Doors'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Buck Owens'
'TRCK' (Track number/Position in set)               '1'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.40.101'
'TXXX:DeviceConformanceTemplate'                    'L1'
'TXXX:IsVBR'                                        '1'
'TXXX:Length'                                       '173766'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['classic country', 'americana', 'country', 'bakersfield sound', 'honky tonk']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.93 dB'
'TXXX:replaygain_track_peak'                        '0.598212'

========================== row from database ==========================
                                              'id'  966771
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Old Country Music/Faron Young & Buck Owens - Swinging Doors.wma.mp3
                                         'working'  None
                                         'bitrate'  194
                                    'duration_sec'  173
                                           'genre'  loc-namerica-country
                                        'filesize'  4235145
                                           'mtime'  1621628075
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Old Music Faron Young & Doors.wma loc namerica country
                                      'tag_artist'  Buck Owens
                                     'tag_release'  Country Roads
                                       'tag_title'  Swinging Doors
                                             'bpm'  117.74
                                    'search_title'  'doors':2 'swinging':1
                                   'search_artist'  'buck':1 'owens':2
                                  'search_release'  'country':1 'roads':2
                                     'search_rest'  'country':4 'doors':9 'doorswma':11 'exotica':2 'faron':7 'jazz':1 'loc':12 'music':6 'namerica':13 'old':5 'oldies':3 'wma':10 'young':8
                                    'search_combo'  'buck':3B 'country':5C,10 'doors':2A,15 'doorswma':17 'exotica':8 'faron':13 'jazz':7 'loc':18 'music':12 'namerica':19 'old':11 'oldies':9 'owens':4B 'roads':6C 'swinging':1A 'wma':16 'young':14
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['classic country', 'americana', 'country', 'bakersfield sound', 'honky tonk']
                                        'tag_date'  1945
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621628075.3055544  (2021-05-21 22:14:35)
                             'size'  4235145