Composers of the Mannheim school introduced a number of novel ideas into the orchestral music of their day: suddencrescendos – the Mannheim Crescendo (a crescendo developed via the whole orchestra) – and diminuendos; crescendos with piano releases; the Mannheim Rocket (a swiftly ascending passage typically having a rising arpeggiated melodic line together with a crescendo); the Mannheim Roller (an extended crescendo passage typically having a rising melodic line over an ostinato bass line); theMannheim Sigh (a mannered treatment of the Baroque practice of putting more weight on the first of two notes in descending pairs of slurred notes);[citation needed] the Mannheim Birds (imitation of birds chirping in solo passages); the Mannheim Climax (a high-energy section of music where all instruments drop out except for the strings, usually preceded by a Mannheim Crescendo); and theGrand Pause where the playing stops for a moment, resulting in total silence, only to restart vigorously. The Mannheim Rocket can be a rapidly ascending broken chord from the lowest range of the bass line to the very top of the soprano line. Its influence can be found at the beginning of the 4th movement of Mozart's Symphony No. 40 as well as the very start of Beethoven's Piano Sonata No. 1 in F minor, Op. 2, No. 1.