======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '227'
                                          'artist'  'Sublime'
                                     'text_people'  ''
                                         'release'  'Second-Hand Smoke'
                                           'title'  "Doin' Time (Uptown Dub)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-OLDST-2', 'Q-HHRNBTT-2', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['reggae', 'alternative', 'ska', 'punk', 'rock']"
                                     'discogstags'  "['progressive house', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'loc-style-reggae or dub or ska or dancehall-ska'
                                             'bpm'  '84.000'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Second-Hand Smoke'
'TBPM' (BPM (beats per minute))                     '84.000'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-reggae or dub or ska or dancehall-ska'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         "Doin' Time (Uptown Dub)"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sublime'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['progressive house', 'electronic']
'TXXX:lastfmtags'                                   ['reggae', 'alternative', 'ska', 'punk', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.33 dB'
'TXXX:replaygain_track_peak'                        '0.584474'

========================== row from database ==========================
                                              'id'  1498924
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/Sublime/MBZ;#Sublime;#Second-Hand Smoke;#01;#Doin_ Time (Uptown Dub).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  227
                                           'genre'  loc-style-reggae or dub or ska or dancehall-ska
                                        'filesize'  4550124
                                           'mtime'  1620524421
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock hiphop rap rnb turntablism MBZ;#Sublime;#Second Smoke;#01;#Doin_ loc style reggae or dub or ska or dancehall ska
                                      'tag_artist'  Sublime
                                     'tag_release'  Second-Hand Smoke
                                       'tag_title'  Doin' Time (Uptown Dub)
                                             'bpm'  84.0
                                    'search_title'  'doin':1,2 'dub':6,7 'time':3 'uptown':4,5
                                   'search_artist'  'sublime':1
                                  'search_release'  'hand':2 'second':1 'secondhand':3 'smoke':4
                                     'search_rest'  '01':12,15 'dancehall':23 'doin':13,16 'dub':21 'hiphop':1 'loc':17 'mbz':5,8 'or':20 'rap':2 'reggae':19 'rnb':3 'second':7,10 'ska':22 'smoke':11,14 'style':18 'sublime':6,9 'turntablism':4
                                    'search_combo'  '01':24,27 'dancehall':35 'doin':1A,2A,25,28 'dub':6A,7A,33 'hand':10C 'hiphop':13 'loc':29 'mbz':17,20 'or':32 'rap':14 'reggae':31 'rnb':15 'second':9C,19,22 'secondhand':11C 'ska':34 'smoke':12C,23,26 'style':30 'sublime':8B,18,21 'time':3A 'turntablism':16 'uptown':4A,5A
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['reggae', 'alternative', 'ska', 'punk', 'rock']
                                        'tag_date'  1997
                                     'discogstags'  ['progressive house', 'electronic']

============================== file details ==============================
                                           'mtime'  1620524421.402581  (2021-05-09 03:40:21)
                             'size'  4550124