The "Actus Tragicus" was one of the youthful compositions of Bach, but it has always attracted the notice of the best musical critics. It was a great favorite with Mendelssohn. Spitta says:-- "It is a work of art well rounded off and firm in its formation, and warmed by the deepest intensity of feeling even in the smallest details." Hauptmann writes to Jahn:-- "Yesterday, at the Euterpe concert, Bach's 'Gottes Zeit' was given. What a marvellous intensity pervades it, without a bar of conventionality! Of the cantatas known to me, I know none in which such design and regard are had to the musical import and its expression." Festa Ascensionis Christi. The cantata beginning with the words, "Wer da glaubet und getauft wird" ("Whoso believeth and is baptized"), commonly known as the Ascension cantata, was written for four voices, with accompaniment of two oboes, two violins, viola, and "continuo,"--the latter word implying a bass part, the harmonies indicated by figures from which the organist built up his own accompaniment. The original score has been lost; but it has been reconstructed from the parts, which are preserved in the Royal Library at Berlin. The cantata is in five numbers. A short prelude of a quiet and cheerful character introduces the stately opening chorus ("Who believeth and obeyeth will be blest forever"). Another brief prelude prepares the way for the brilliant tenor aria ("Of Love, Faith is the Pledge and Token"), which leads up to the chorale, "Lord God, my Father, holy One," based upon the old chorale, "Wie schön leucht uns der Morgenstern" ("How brightly shines the Morning Star"), which has always been a favorite in the church service, and which more than one composer has chosen for the embellishment of his themes. The chorale is not employed in its original form, but is elaborated with all the contrapuntal skill for which Bach was so famous. The next number is a short recitative for the bass voice ("Ye Mortals, hear, all ye who would behold the Face of God"), and leads to a stately bass aria ("Through Faith the Soul has Eagle's Pinions"). The cantata closes, after the customary manner of Bach, with a strong, earnest chorale ("Oh, give me Faith, my Father!"), in plain, solid harmony, for the use of the congregation, thus forming an effective devotional climax to the work. Ein' Feste Burg. "A safe stronghold our God is still, A trusty shield and weapon; He'll help us clear from all the ill That hath us now o'ertaken. The ancient Prince of Hell Hath risen with purpose fell; Strong mail of craft and power He weareth in this hour. On Earth is not his fellow. * * * * *