Rachmaninoff : Piano Concerto No2 in C minor
~~ 如何欣賞古典音樂 ~~
曲式 (Form)：作曲家作曲，必定先在程示部奏出 (Announce) 主題 (Theme)，然後按某種曲式把主題剝皮拆骨，
協奏曲以一小段 ( 8小 節 ) 近乎靜止 (Motionless) 的鋼琴引子開始：
由 0.36 秒至 1.03 秒：
此作品的調性明確 ( Tonal, no ambiguous area)，兩個主題的旋律都優美而處於可唱的音域；大家可以跟著弦樂認熟或 (最好) 唱熟它：
( 這個主題會令人全身起雞皮的 )
音樂奏到第 2分39秒，以「含蓄」聞名於世的第二主題「有保留地」在鋼琴上露出頭角 (以變奏的形式出現)，一直去到4分22 秒：
由4分40秒左右開始，跟著鋼琴認熟或唱熟它吧 —— 親戚調 E flat Major (Relative Major)；extremely lyrical (整首作品都是如泣如訴的)：
6. 56 秒：第一主再於富節奏感的鋼琴伴奏下完整地在弦樂中奏出 ......
2nd Movement：Adagio sostenuto : C# minor → E major
3rd Movement：Allegro scherzando: E major → C minor → C major
More deep structure description of this work from the web: Wikipedia
The work is scored for 2 flutes, 2 oboes, 2 clarinets in B flat (I mov.) and A (II & III mov.), 2 bassoons, 4 horns in F, 2 trumpets in B flat , 3 trombones (2 tenor, 1 bass), tuba, timpani, bass drum, cymbals, solo piano, and strings.
I : C minor
The opening movement begins with a series of bell-like tollings on the piano that build tension, eventually climaxing in the introduction of the main theme. In this first section, the orchestra carries the Russian-character melody while the piano makes an accompaniment made of rapid oscillating arpeggios (鐘擺式的琶音). After the statement of the long first theme, a quicker transition follows until the lyrical second theme, in E flat major (主調 C minor 的關係大調), is presented.
The agitated and unstable development borrows motives from both themes changing keys very often and giving the melody to different instruments while a new musical idea is slowly formed. The music builds in a gradual climax as if the first bars were to be repeated, but in the recapitulation the theme is presented as unique to the first statement.
While the orchestra restates the first theme, the piano, that in the other occasion had an accompaniment role, now plays the march-like theme that had been halfly presented in the development, thus making a considerable readjustment in the exposition, as the main theme, played by the orchestra has become an accompaniment. This is followed by a piano solo, which leads into a descending chromatic passage and concluding with an eerie French horn solo. From here the last minutes of the movement are placid until drawn into the agitated coda, and the movement ends in C minor fortissimo.
II : Adagio sostenuto – Piu animato – Tempo I: C sharp minor → E major
The second movement opens with a series of slow chords in the strings which modulate from the C minor of the previous movement to the E major of this movement. The piano enters, playing a simple arpeggiated figure. This opening piano figure was composed in 1891 as the opening of the Romance from Two Pieces For Six Hands. The main theme is initially introduced by the flute, before being developed by an extensive clarinet solo. The motif is passed between the piano and other soloists before the music accelerates to a short climax centred on the piano. The original theme is repeated, and the music appears to die away, finishing with just the soloist in E major.
III : Allegro scherzando: E major → C minor → C major
The last movement opens with a short orchestral introduction that modulates from E (the key of the previous movement) to C, before a piano solo leads to the statement of the agitated first theme. After the original fast tempo and musical drama ends, a lyrical theme is introduced by the oboe and violas. This second theme maintains the motif of the first movement's second theme. After a long period of development tension is built up considerably. Near the end, Rachmaninoff restates the second theme in loud, fortissimo orchestration. After this, a fast, ecstatic coda draws the piece to a close, ending in C major. ( 註 ：同名的大小調都用同一個屬和弦：V；所以，小調的樂章以同名大調和弦作結是輕易而常見的；倒轉則沒有。)
理論為基礎，情感為表面：Nothing is accidental in Music。