======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '358'
                                          'artist'  'Blue Man Group'
                                     'text_people'  ''
                                         'release'  'Audio'
                                           'title'  'Rods and Cones'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['instrumental', 'electronica', 'electronic', 'experimental', 'rock']"
                                     'discogstags'  "['rock', 'alternative rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '103.642'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Audio'
'TBPM' (BPM (beats per minute))                     '103.642'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Rods and Cones'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Blue Man Group'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'alternative rock']
'TXXX:lastfmtags'                                   ['instrumental', 'electronica', 'electronic', 'experimental', 'rock']
'TXXX:original release date'                        ['1999', '1999']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.23 dB'
'TXXX:replaygain_track_peak'                        '0.579053'

========================== row from database ==========================
                                              'id'  1356040
                                            'path'  /data/Music/Bulk/00poprockelectronic/Blue Man Group/MBZ;#Blue Man Group;#Audio;#05;#Rods and Cones.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  358
                                           'genre'  electronic-unsorted
                                        'filesize'  5738765
                                           'mtime'  1622756711
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic MBZ;#Blue Group;#Audio;#05;#Rods electronic unsorted
                                      'tag_artist'  Blue Man Group
                                     'tag_release'  Audio
                                       'tag_title'  Rods and Cones
                                             'bpm'  103.642
                                    'search_title'  'and':2 'cones':3 'rods':1
                                   'search_artist'  'blue':1 'group':3 'man':2
                                  'search_release'  'audio':1
                                     'search_rest'  '00poprockelectronic':1 '05':8,12 'audio':7,11 'blue':3,5 'electronic':14 'group':6,10 'mbz':2,4 'rods':9,13 'unsorted':15
                                    'search_combo'  '00poprockelectronic':8 '05':15,19 'and':2A 'audio':7C,14,18 'blue':4B,10,12 'cones':3A 'electronic':21 'group':6B,13,17 'man':5B 'mbz':9,11 'rods':1A,16,20 'unsorted':22
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'electronica', 'electronic', 'experimental', 'rock']
                                        'tag_date'  1999
                                     'discogstags'  ['rock', 'alternative rock']

============================== file details ==============================
                                           'mtime'  1622756711.44894  (2021-06-03 23:45:11)
                             'size'  5738765