======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '397'
                                          'artist'  'Emmanuel Top'
                                     'text_people'  ''
                                         'release'  'maleta  acid rave'
                                           'title'  'Acid Phase (Kai Tracid Remix)'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'Q-GRIT-3', 'q-bass-4', 'q-drums-4', 'q-other-2', 'q-piano-1', "
 "'q-vocals-1', 'Q-SYN-4', 'Q-BUSY-3', 'Q-PLAY-2', 'Q-CHART-2', 'Q-MIXBEAT-3']")
                                      'lastfmtags'  "['techno', 'acid', 'trance', 'electronic', 'acid techno', 'acid trance']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-acid'
                                             'bpm'  '138.0'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'maleta  acid rave'
'TBPM' (BPM (beats per minute))                     '138.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-acid'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Acid Phase (Kai Tracid Remix)'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Emmanuel Top'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '4'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['techno', 'acid', 'trance', 'electronic', 'acid techno', 'acid trance']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+6.17 dB'
'TXXX:replaygain_track_peak'                        '0.925423'

========================== row from database ==========================
                                              'id'  1484216
                                            'path'  /data/Music/Bulk/00poprockelectronic/maleta__ acid rave/emmanuel top - acid phase (kai tracid remix).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  397
                                           'genre'  electronic-th-techno-acid
                                        'filesize'  6359916
                                           'mtime'  1620573768
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic maleta__ emmanuel top phase (kai tracid remix) electronic th techno
                                      'tag_artist'  Emmanuel Top
                                     'tag_release'  maleta  acid rave
                                       'tag_title'  Acid Phase (Kai Tracid Remix)
                                             'bpm'  138.0
                                    'search_title'  'acid':1 'kai':3,4 'phase':2 'remix':6,7 'tracid':5
                                   'search_artist'  'emmanuel':1 'top':2
                                  'search_release'  'acid':2 'maleta':1 'rave':3
                                     'search_rest'  '00poprockelectronic':1 'electronic':11 'emmanuel':3 'kai':6,7 'maleta':2 'phase':5 'remix':9,10 'techno':13 'th':12 'top':4 'tracid':8
                                    'search_combo'  '00poprockelectronic':13 'acid':1A,11C 'electronic':23 'emmanuel':8B,15 'kai':3A,4A,18,19 'maleta':10C,14 'phase':2A,17 'rave':12C 'remix':6A,7A,21,22 'techno':25 'th':24 'top':9B,16 'tracid':5A,20
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-3', 'Q-OLDST-3', 'Q-GRIT-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-4', 'Q-SYN-4', 'q-other-2', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-4']
                                      'lastfmtags'  ['techno', 'acid', 'trance', 'electronic', 'acid techno', 'acid trance']
                                        'tag_date'  2002
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620573768.3397026  (2021-05-09 17:22:48)
                             'size'  6359916