======================== unified (from filesystem) ========================
                                         'bitrate'  '320.006'
                                        'duration'  '586'
                                          'artist'  'Pete Heller'
                                     'text_people'  ''
                                         'release'  'maleta  acid rave'
                                           'title'  'Nu Acid (Robert Babicz Smiling Remix)'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-GRIT-3', 'q-bass-3', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'Q-SYN-4', 'Q-BUSY-3', 'Q-PLAY-2', 'Q-CHART-2', "
 "'Q-MIXBEAT-3']")
                                      'lastfmtags'  "['house', 'electronic', 'electronica', 'dance']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-acid'
                                             'bpm'  '123.01'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:http://www.cdtag.com:\x01\x01@Wª\x00'         PRIV(owner='http://www.cdtag.com', data=b'\x01\x01@W\xaa\x00')
'TALB' (Album/Movie/Show title)                     'maleta  acid rave'
'TBPM' (BPM (beats per minute))                     '123.01'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-acid'
'TCOP' (Copyright message)                          'Bedrock Records - Bed93'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Nu Acid (Robert Babicz Smiling Remix)'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Pete Heller'
'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'                                   ['house', 'electronic', 'electronica', 'dance']
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.46 dB'
'TXXX:replaygain_track_peak'                        '0.458380'

========================== row from database ==========================
                                              'id'  1484256
                                            'path'  /data/Music/Bulk/00poprockelectronic/maleta__ acid rave/pete heller - nu acid (robert babicz smiling remix).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  586
                                           'genre'  electronic-th-techno-acid
                                        'filesize'  23452864
                                           'mtime'  1620573805
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic maleta__ pete heller nu (robert babicz smiling remix) electronic th techno
                                      'tag_artist'  Pete Heller
                                     'tag_release'  maleta  acid rave
                                       'tag_title'  Nu Acid (Robert Babicz Smiling Remix)
                                             'bpm'  123.01
                                    'search_title'  'acid':2 'babicz':5 'nu':1 'remix':7,8 'robert':3,4 'smiling':6
                                   'search_artist'  'heller':2 'pete':1
                                  'search_release'  'acid':2 'maleta':1 'rave':3
                                     'search_rest'  '00poprockelectronic':1 'babicz':8 'electronic':12 'heller':4 'maleta':2 'nu':5 'pete':3 'remix':10,11 'robert':6,7 'smiling':9 'techno':14 'th':13
                                    'search_combo'  '00poprockelectronic':14 'acid':2A,12C 'babicz':5A,21 'electronic':25 'heller':10B,17 'maleta':11C,15 'nu':1A,18 'pete':9B,16 'rave':13C 'remix':7A,8A,23,24 'robert':3A,4A,19,20 'smiling':6A,22 'techno':27 'th':26
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           '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-1', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-3']
                                      'lastfmtags'  ['house', 'electronic', 'electronica', 'dance']
                                        'tag_date'  2010
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620573804.9302158  (2021-05-09 17:23:24)
                             'size'  23452864