彈鋼琴時要怎麼根據主旋律編配左手的伴奏？
step.1.找主旋律step.2. 找和弦——留意低音root（有鼓點、貝斯這些更好）
- 柱式和弦。（一個八度 一個和弦）
- 和弦分解
流行音樂有這兩個基本就夠用了
step.3.找感覺——多練，多模仿（記得當初似乎從正三和弦及屬七和弦的連接開始）
推薦CZERNY.Op. 718Scriabin Op12 no.8/(2 Nocturnes) Op.5 / (2 Pieces for left hand ) Op.9 / Poeme-Nocturne）Op.61一、定風格
二、憑感覺三、能演奏沒了，這題。First, you need to know what key your melody is in.
Than, find out the BASIC chord progression of your melody. aka. make sure every chord you play fits the note in the right hand. A common chord progression in key of C would be Cmaj, Gmaj, Am, Fmaj. To start with the easy ones, you should play around with the first, fourth, fifth, and sixth minor chord-combination.
After you find the basic chords progression you wanna play with, try some voicing. Voicing is to add additional notes that most likely are not in your triplet chord. For example, for an Am chord in C major key, a B natural could make a refreshing color. Any note in a C minor triplet also goes well with a B flat major chord.I dont think, at least in your state, you need to worry about patterns in your left hand so much. When you have the chord progression, you can either just play the chords twice a measure to create a chill and relaxing atmosphere, or you can just arpeggio along the chords with a one five eight five pattern. Those should serve you well for now. If you want some swing or jazz taste, shuffling your rhythm a little bit also helps.Obviously, improvising contains much more than what I just said. So if you are interested in asking any specific questions, please comment under this or PM me.
Thx搞本和聲學來，桑桐就行如果還不行，請個作曲系高年級的優秀學生給你講一下
我來斗膽一答~把每小節的幾個主要的音作根音配和弦，節奏依拍數不同、音樂風格不同取常用方式，副歌要和其它部分節奏有區分。
按照在下分析，樓主絕對沒什麼精力去學和聲學....樓上大約是學院派？
一種偷懶的方式....大概是按照右手旋律在強拍上的音來決定左手和弦的根音，使用柱式，半分解還是分解和弦就需要自己決定了。而且還是應該記下常見的和聲進行為妙。
推薦一本真心不錯的書《1000個鍵盤技巧》，特點是很實用而又通俗易懂。（真心通俗到了極致，這是我見過最有趣的與簡單的一本鍵盤教程了。）
真想知道樓主自己彈鋼琴是個什麼情況，這個問題太…… 彈即興伴奏首先要了解三個知識，旋律、和聲、伴奏織體。 旋律就是通常右手所彈奏的部分，按旋律配和聲，再由各種伴奏織體將這些和聲表現出來。。 不知道樓主鋼琴基礎如何。能不能彈奏單旋律並且對旋律進行分析理解，了不了解樂理、和聲基本知識，有木有伴奏織體基本概念，所以，就算是你找老師上課教你也不是一節課的內容呢。如果真想知道就把自己情況寫清楚，問題再明確點。
不知道你平常練習音階的時候有沒有同時練屬七減七和弦。練過的話比較容易，知道哪些和弦配哪些調，再稍微看一下配和聲或者即興伴奏的書即可。
我是天生就會…彈流行歌的時候憑感覺基本上升降號不多的調一遍過……難道這個還要學??不是很簡單嗎…[別打我……]
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