======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '263'
                                          'artist'  'project e.l.f.'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Head Pond (Tantrum Mix)'
                                           'quals'  ("['Q-MIXBEAT-3', 'Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'Q-OLDST-3', 'q-syn-4', 'q-bass-4', 'q-busy-3', 'q-grit-2', "
 "'q-play-3', 'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', "
 "'q-vocals-1']")
                                      'lastfmtags'  "['poi']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-minimal or deephouse'
                                             'bpm'  '135.0'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '135.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-minimal or deephouse'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Head Pond (Tantrum Mix)'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'project e.l.f.'
'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-UNU'                                        '1'
'TXXX:lastfmtags'                                   'poi'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.52 dB'
'TXXX:replaygain_track_peak'                        '0.612830'

========================== row from database ==========================
                                              'id'  858089
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/soundcloud/project-e-l-f/Remixed - Head Pond (Tantrum Mix)-5472728.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  263
                                           'genre'  electronic-th-techno-minimal or deephouse
                                        'filesize'  4213928
                                           'mtime'  1621084998
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm soundcloud Remixed 5472728 electronic th techno minimal or deephouse
                                      'tag_artist'  project e.l.f.
                                     'tag_release'  None
                                       'tag_title'  Head Pond (Tantrum Mix)
                                             'bpm'  135.0
                                    'search_title'  'head':1 'mix':5,6 'pond':2 'tantrum':3,4
                                   'search_artist'  'e':2 'elf':5 'f':4 'l':3 'project':1
                                  'search_release'  
                                     'search_rest'  '5472728':3 'deephouse':9 'electronic':4 'minimal':7 'or':8 'remixed':2 'soundcloud':1 'techno':6 'th':5
                                    'search_combo'  '5472728':14 'deephouse':20 'e':8B 'electronic':15 'elf':11B 'f':10B 'head':1A 'l':9B 'minimal':18 'mix':5A,6A 'or':19 'pond':2A 'project':7B 'remixed':13 'soundcloud':12 'tantrum':3A,4A 'techno':17 'th':16
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-4', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['poi']
                                        'tag_date'  2010
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621084998.1268833  (2021-05-15 15:23:18)
                             'size'  4213928