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https://groothuizen.org:443/files/gimgs/th-69_piano_C4_small_solo_texture2-4.jpg
https://groothuizen.org:443/files/gimgs/th-69_piano_C4_small_solo_texture2-1.jpg
https://groothuizen.org:443/files/gimgs/th-69_piano_C4_small_solo_texture2-5.jpg