======================== unified (from filesystem) ========================
                                         'bitrate'  '258.863'
                                        'duration'  '226'
                                          'artist'  'Prince'
                                     'text_people'  'Prince and the Revolution'
                                         'release'  'The Very Best of Prince'
                                           'title'  'Kiss'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-3', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['80s', 'rock', 'pop', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk-pop'
                                             'bpm'  '111.701'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Very Best of Prince'
'TBPM' (BPM (beats per minute))                     '111.701'
'TCOM' (Composer)                                   'Prince and the Revolution'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk-pop'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Kiss'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Prince & the Revolution'
'TPE2' (Band/orchestra/accompaniment)               'Prince'
'TPUB' (Publisher)                                  'Rhino'
'TRCK' (Track number/Position in set)               '9'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.40.101'
'TXXX:DeviceConformanceTemplate'                    'L3'
'TXXX:IsVBR'                                        '0'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:WM/EncodingTime'                              '2146284032'
'TXXX:WM/MediaPrimaryClassID'                       '{D1607DBC-E323-4BE2-86A1-48A42A28441E}'
'TXXX:WM/Provider'                                  'AMG'
'TXXX:WM/ProviderRating'                            '9'
'TXXX:WM/ProviderStyle'                             'Rock'
'TXXX:WM/UniqueFileIdentifier'                      'AMGa_id=R   541225;AMGp_id=P     5182;AMGt_id=T  4909967'
'TXXX:WM/WMADRCAverageReference'                    '5701'
'TXXX:WM/WMADRCPeakReference'                       '30270'
'TXXX:WM/Year'                                      '2001'
'TXXX:WMFSDKNeeded'                                 '0.0.0.0000'
'TXXX:WMFSDKVersion'                                '9.00.00.2980'
'TXXX:lastfmtags'                                   ['80s', 'rock', 'pop', 'funk']
'TXXX:original release date'                        ['2001', '2001']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.67 dB'
'TXXX:replaygain_track_peak'                        '0.636618'

========================== row from database ==========================
                                              'id'  968405
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Prince/09 Kiss.wma.mp3
                                         'working'  None
                                         'bitrate'  258
                                    'duration_sec'  226
                                           'genre'  funk or soul-funk-pop
                                        'filesize'  7329884
                                           'mtime'  1637330757
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 09 Kiss.wma funk or soul funk pop
                                      'tag_artist'  Prince
                                     'tag_release'  The Very Best of Prince
                                       'tag_title'  Kiss
                                             'bpm'  111.701
                                    'search_title'  'kiss':1
                                   'search_artist'  'prince':1
                                  'search_release'  'best':3 'of':4 'prince':5 'the':1 'very':2
                                     'search_rest'  'country':4 'exotica':2 'funk':8 'jazz':1 'kiss':5 'kisswma':7 'oldies':3 'or':9 'pop':11 'soul':10 'wma':6
                                    'search_combo'  'best':5C 'country':11 'exotica':9 'funk':15 'jazz':8 'kiss':1A,12 'kisswma':14 'of':6C 'oldies':10 'or':16 'pop':18 'prince':2B,7C 'soul':17 'the':3C 'very':4C 'wma':13
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-3']
                                      'lastfmtags'  ['80s', 'rock', 'pop', 'funk']
                                        'tag_date'  2001
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637330756.607565  (2021-11-19 15:05:56)
                             'size'  7329884