Faith in C Major Op. 102 No. 6 by Felix Mendelssohn. Sheet music and recordings of thousands of piano pieces by Felix Mendelssohn and many other famous composers to view in your digital device, print out or listen to. Faith in C Major - Op. 102 No. 6 is a piece by the early romantic composer Felix Mendelssohn. The composition was first published in 1845 and is included in Songs Without Words by Mendelssohn.