======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '162'
                                          'artist'  'The West Coast Pop Art Experimental Band'
                                     'text_people'  ''
                                         'release'  "Volume 3: A Child's Guide to Good & Evil"
                                           'title'  'Eighteen Is Over the Hill'
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                                      'lastfmtags'  "['progressive rock', 'psychedelic rock', '60s', 'psychedelic', 'rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '12'
                                            'date'  '1968'
                                        'comments'  ''
                                           'genre'  'rock-cppex-psychedelic'
                                             'bpm'  '132.791'
                                             'key'  '2B'
                                        'acoustid'  'acc6fed5-966e-4280-ac72-43a430db14c2'
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======================== rawer (from filesystem) ========================

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'TBPM' (BPM (beats per minute))                     '132.791'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-psychedelic'
'TDOR' (Original release time)                      '1968'
'TDRC' (Recording time)                             '1968'
'TIT2' (Title/songname/content description)         'Eighteen Is Over the Hill'
'TKEY' (Initial key)                                '2B'
'TMED' (Media type)                                 '12" Vinyl'
'TPE1' (Lead performer(s)/Soloist(s))               'The West Coast Pop Art Experimental Band'
'TPE2' (Band/orchestra/accompaniment)               'The West Coast Pop Art Experimental Band'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Reprise Records'
'TRCK' (Track number/Position in set)               '1/12'
'TSO2'                                              'West Coast Pop Art Experimental Band, The'
'TSOP' (Performer sort order)                       'West Coast Pop Art Experimental Band, The'
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'TXXX:MusicBrainz Album Id'                         'dccd99cc-8e32-446e-a05c-9a1301cac0c8'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'b57bb478-ff2c-46e6-ae67-653f9e873325'
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'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
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'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['progressive rock', 'psychedelic rock', '60s', 'psychedelic', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.62 dB'
'TXXX:replaygain_track_peak'                        '0.588125'
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/West Coast Pop Art-Vol. 1-3/The West Coast Pop Art Experimental Band-Vol 3-1968/TWCPAEB - Vol 3 - 01 - Eighteen Is Over The Hill (1968).mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  162
                                           'genre'  rock-cppex-psychedelic
                                        'filesize'  5216083
                                           'mtime'  1620737246
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy Vol. 1 1968 TWCPAEB 01 (1968) rock cppex psychedelic
                                      'tag_artist'  The West Coast Pop Art Experimental Band
                                     'tag_release'  Volume 3: A Child's Guide to Good & Evil
                                       'tag_title'  Eighteen Is Over the Hill
                                             'bpm'  132.791
                                    'search_title'  'eighteen':1 'hill':5 'is':2 'over':3 'the':4
                                   'search_artist'  'art':5 'band':7 'coast':3 'experimental':6 'pop':4 'the':1 'west':2
                                  'search_release'  '3':2,3 'a':4 'child':5 'childs':7 'evil':11 'good':10 'guide':8 's':6 'to':9 'volume':1
                                     'search_rest'  '1':4 '1968':5,7 'classicprogpsy':1 'cppex':9 'psychedelic':10 'rock':8 'twcpaeb':6 'vol':2,3
                                    'search_combo'  '1':27 '1968':28,30 '3':14C,15C 'a':16C 'art':10B 'band':12B 'child':17C 'childs':19C 'classicprogpsy':24 'coast':8B 'cppex':32 'eighteen':1A 'evil':23C 'experimental':11B 'good':22C 'guide':20C 'hill':5A 'is':2A 'over':3A 'pop':9B 'psychedelic':33 'rock':31 's':18C 'the':4A,6B 'to':21C 'twcpaeb':29 'vol':25,26 'volume':13C 'west':7B
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['progressive rock', 'psychedelic rock', '60s', 'psychedelic', 'rock']
                                        'tag_date'  1968
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620737245.7763019  (2021-05-11 14:47:25)
                             'size'  5216083