======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '444'
                                          'artist'  'Os Mundi'
                                     'text_people'  ''
                                         'release'  'progsoup 59'
                                           'title'  'Credo I'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['krautrock', 'progressive rock', 'psychedelic', 'experimental', 'german']"
                                     'discogstags'  "['krautrock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '24'
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive;set-pl-progspace'
                                             'bpm'  '126.017'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'progsoup 59'
'TBPM' (BPM (beats per minute))                     '126.017'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-progressive', 'set-pl-progspace']
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'Credo I'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Os Mundi'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '24'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['krautrock', 'rock']
'TXXX:lastfmtags'                                   ['krautrock', 'progressive rock', 'psychedelic', 'experimental', 'german']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.33 dB'
'TXXX:replaygain_track_peak'                        '0.589051'

========================== row from database ==========================
                                              'id'  1414908
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 59/3303 os mundi - credo i.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  444
                                           'genre'  rock-cppex-progressive;set-pl-progspace
                                        'filesize'  17807116
                                           'mtime'  1620737611
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP 3303 os mundi credo rock cppex progressive;set pl progspace
                                      'tag_artist'  Os Mundi
                                     'tag_release'  progsoup 59
                                       'tag_title'  Credo I
                                             'bpm'  126.017
                                    'search_title'  'credo':1 'i':2
                                   'search_artist'  'mundi':2 'os':1
                                  'search_release'  '59':2 'progsoup':1
                                     'search_rest'  '3303':3 'classicprogpsy':1 'cppex':8 'credo':6 'mundi':5 'os':4 'pl':13 'progressive':9,11 'progsoup':2 'progspace':14 'rock':7 'set':10,12
                                    'search_combo'  '3303':9 '59':6C 'classicprogpsy':7 'cppex':14 'credo':1A,12 'i':2A 'mundi':4B,11 'os':3B,10 'pl':19 'progressive':15,17 'progsoup':5C,8 'progspace':20 'rock':13 'set':16,18
                                    'tag_tracknum'  24
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['krautrock', 'progressive rock', 'psychedelic', 'experimental', 'german']
                                        'tag_date'  1970
                                     'discogstags'  ['krautrock', 'rock']

============================== file details ==============================
                                           'mtime'  1620737610.6227973  (2021-05-11 14:53:30)
                             'size'  17807116