======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '317'
                                          'artist'  'Faithless '
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Insomnia (Effect Original Mix)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-2', 'q-syn-3', 'q-bass-2', 'q-busy-3', "
 "'q-grit-2', 'q-play-3', 'Q-OLDST-3', 'q-chart-2', 'q-drums-4', 'q-other-1', "
 "'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'q-mixbeat-3', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['electronic', 'trip-hop', 'dance', 'house', 'electronica']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz'
                                             'bpm'  '142.008'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '142.008'
'TCON' (Content type, a.k.a. Genre)                 'electronic-trip hop or downtempo or acid jazz'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'Insomnia (Effect Original Mix)'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Faithless '
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['electronic', 'trip-hop', 'dance', 'house', 'electronica']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.62 dB'
'TXXX:replaygain_track_peak'                        '0.353505'

========================== row from database ==========================
                                              'id'  1314390
                                            'path'  /data/Music/Bulk/00poprockelectronic/Faithless/1996 - Insomnia (single)/Faithless-Insomnia 2007 (E.F.F.E.C.T.Original mix)-WEB-2007.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  317
                                           'genre'  electronic-trip hop or downtempo or acid jazz
                                        'filesize'  12714788
                                           'mtime'  1636911226
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 1996 (single) 2007 (E.F.F.E.C.T.Original mix) WEB 2007 electronic trip hop or downtempo or acid jazz
                                      'tag_artist'  Faithless 
                                     'tag_release'  None
                                       'tag_title'  Insomnia (Effect Original Mix)
                                             'bpm'  142.008
                                    'search_title'  'effect':2,3 'insomnia':1 'mix':5,6 'original':4
                                   'search_artist'  'faithless':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '1996':2 '2007':5 'acid':22 'c':10 'downtempo':21 'e':6,9 'effectoriginal':13 'electronic':17 'f':7,8 'hop':19 'jazz':23 'mix':14,15 'or':20 'original':12 'single':3,4 't':11 'trip':18 'web':16
                                    'search_combo'  '00poprockelectronic':8 '1996':9 '2007':12 'acid':29 'c':17 'downtempo':28 'e':13,16 'effect':2A,3A 'effectoriginal':20 'electronic':24 'f':14,15 'faithless':7B 'hop':26 'insomnia':1A 'jazz':30 'mix':5A,6A,21,22 'or':27 'original':4A,19 'single':10,11 't':18 'trip':25 'web':23
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           '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-2', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['electronic', 'trip-hop', 'dance', 'house', 'electronica']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636911226.084938  (2021-11-14 18:33:46)
                             'size'  12714788