The selection "No. 1 in E minor" on this page is actually from http://imslp.org/wiki/3_Preludes_and_Fugues,_Op.37_%28Mendelssohn,_Felix%29 , not this work.
I'm sorry, it's from http://imslp.org/wiki/Prelude_and_Fugue,_WoO_13_%28Mendelssohn,_Felix%29 . My mistake.
