一、二胡適合獨奏還是合奏
二胡又稱胡琴(qin),是極(ji)具(ju)民族特色(se)(se)的(de)拉弦樂的(de)器(qi),在(zai)天然音色(se)(se)和演奏技巧方面都具(ju)有(you)(you)極(ji)強(qiang)的(de)表現力,有(you)(you)“東方小提琴(qin)”的(de)美稱,二胡的(de)演奏形式也比較多元化,如獨奏、合奏與齊(qi)奏等,那么二胡適合獨奏嗎?
其實,二胡合(he)奏(zou)(zou)(zou)與(yu)獨奏(zou)(zou)(zou)的應用(yong)方式(shi)沒(mei)有太(tai)大的區別,只是個人情感層面的飽和度不同而已,不過各(ge)種技(ji)巧形式(shi)在二胡合(he)奏(zou)(zou)(zou)和獨奏(zou)(zou)(zou)中的應用(yong)存在一定差異,演奏(zou)(zou)(zou)者需要結合(he)特定情況,靈活調整演奏(zou)(zou)(zou)技(ji)巧,以(yi)加(jia)強整體演繹效(xiao)果。
二胡(hu)獨(du)奏(zou)和合奏(zou)都有許多經典的曲(qu)目,相對來說,二胡(hu)獨(du)奏(zou)更能展現個人演(yan)奏(zou)風格或演(yan)奏(zou)技巧。
二、二胡獨奏的基本技法有哪些
二胡(hu)(hu)音色優美,可(ke)以(yi)單獨(du)演(yan)奏(zou)(zou)曲目,不(bu)過(guo)二胡(hu)(hu)獨(du)奏(zou)(zou)對演(yan)奏(zou)(zou)者的(de)(de)技藝要(yao)求(qiu)較高,二胡(hu)(hu)的(de)(de)演(yan)奏(zou)(zou)技法(fa)(fa)眾(zhong)多,大致(zhi)可(ke)分為(wei)左手技法(fa)(fa)和(he)右手技法(fa)(fa),即(ji)指法(fa)(fa)和(he)弓法(fa)(fa),下面為(wei)大家介紹(shao)二胡(hu)(hu)的(de)(de)技法(fa)(fa):
1、長弓
拉(la)(la)弓(gong)時(shi)(shi),右(you)手(shou)腕要(yao)稍稍向(xiang)外突起呈“外伸狀(zhuang)態”,以腕部(bu)為先動點(dian)向(xiang)右(you)拉(la)(la)出。在拉(la)(la)弓(gong)時(shi)(shi),右(you)臂(bei)不可向(xiang)右(you)后方運動,使弓(gong)子拉(la)(la)成一個圓弧狀(zhuang)。推弓(gong)時(shi)(shi),要(yao)以大(da)臂(bei)往回收(shou)作(zuo)為先動點(dian),帶(dai)動小(xiao)臂(bei)向(xiang)左推進,此時(shi)(shi),手(shou)腕應呈“內屈狀(zhuang)態”。當(dang)大(da)臂(bei)收(shou)完后,小(xiao)臂(bei)繼續(xu)向(xiang)左推;小(xiao)臂(bei)收(shou)完后手(shou)還要(yao)將弓(gong)子推進幾公分,使手(shou)腕再次轉換成“中間(jian)狀(zhuang)態”,以便開(kai)始下一個拉(la)(la)弓(gong)動作(zuo)。
2、換弦
換(huan)(huan)(huan)(huan)弦(xian)分慢(man)速(su)(包括(kuo)中速(su))換(huan)(huan)(huan)(huan)弦(xian)和(he)快速(su)換(huan)(huan)(huan)(huan)弦(xian),慢(man)速(su)換(huan)(huan)(huan)(huan)弦(xian)時,盡量以(yi)右手(shou)中指和(he)無(wu)名指的(de)(de)(de)動(dong)作(zuo)為主,而(er)以(yi)手(shou)臂的(de)(de)(de)動(dong)作(zuo)為輔。在換(huan)(huan)(huan)(huan)弦(xian)過程(cheng)中,通(tong)常要(yao)求(qiu)弓毛往(wang)弦(xian)上“靠”,而(er)不是往(wang)弦(xian)上“撞”。此外(wai)(wai),還要(yao)注意保持弓子運行速(su)度的(de)(de)(de)均衡,不可因換(huan)(huan)(huan)(huan)弦(xian)而(er)突然改(gai)變(bian)弓速(su)。快速(su)換(huan)(huan)(huan)(huan)弦(xian)時,手(shou)指動(dong)作(zuo)由右手(shou)其它部位(wei)來帶(dai)動(dong),先拉內(nei)弦(xian),后(hou)推外(wai)(wai)弦(xian)稱(cheng)為正向換(huan)(huan)(huan)(huan)弦(xian),手(shou)指的(de)(de)(de)動(dong)作(zuo)是由腕部來帶(dai)動(dong)的(de)(de)(de);先拉外(wai)(wai)弦(xian),后(hou)推內(nei)弦(xian)的(de)(de)(de)快速(su)換(huan)(huan)(huan)(huan)弦(xian)稱(cheng)為反向換(huan)(huan)(huan)(huan)弦(xian),換(huan)(huan)(huan)(huan)弓的(de)(de)(de)動(dong)作(zuo)是由臂部來帶(dai)動(dong)的(de)(de)(de)。
3、分弓
在(zai)中等速度下每弓(gong)(gong)演奏一(yi)個四分(fen)音(yin)符(fu)或一(yi)個八分(fen)音(yin)符(fu)的一(yi)種弓(gong)(gong)法,一(yi)般用中弓(gong)(gong)部位(wei)來演奏,分(fen)弓(gong)(gong)的組合是(shi)千變(bian)萬化的,拉推弓(gong)(gong)的時值往往不(bu)同,運弓(gong)(gong)的長度也必然不(bu)同,但發(fa)音(yin)卻要求一(yi)致,這就需要調整弓(gong)(gong)與弦的“壓(ya)速比(bi)例(li)”來做(zuo)到。
4、連弓
用(yong)一弓(gong)演奏兩(liang)個或兩(liang)個以上音(yin)符的(de)弓(gong)法(fa)稱為連弓(gong),連弓(gong)的(de)組合千變萬化,而且連弓(gong)中每一個音(yin)的(de)時(shi)值(zhi)也(ye)往往不同,加上強弱的(de)變化等(deng)等(deng),就(jiu)使連弓(gong)的(de)演奏變得(de)非常復雜。連弓(gong)技法(fa)要(yao)注意合理(li)地(di)(di)分配弓(gong)段,運弓(gong)要(yao)柔軟、均(jun)勻(yun),換弓(gong)時(shi)要(yao)盡量地(di)(di)減(jian)少痕跡。
5、快弓
在演奏快弓(gong)時(shi),手(shou)和肘要(yao)同(tong)時(shi)向(xiang)對方的(de)(de)(de)相反方向(xiang)均(jun)勻地擺動(dong),在運動(dong)中,手(shou)腕只是起一個(ge)力(li)量的(de)(de)(de)調節作用,使快弓(gong)的(de)(de)(de)動(dong)作不致于僵硬。因此,既不可緊張,也不能(neng)過于松弛。快弓(gong)在換弓(gong)時(shi),弓(gong)毛(mao)也要(yao)緊貼琴弦,每一弓(gong)都要(yao)有“嘎”的(de)(de)(de)一聲音頭,這樣的(de)(de)(de)快弓(gong)才(cai)能(neng)具有顆粒性。
6、顫弓
將(jiang)動(dong)(dong)作(zuo)的“軸”放(fang)在小(xiao)(xiao)(xiao)臂(bei)(bei)(bei)的中部,使肘和腕成為平(ping)衡的兩端;以大(da)臂(bei)(bei)(bei)微(wei)微(wei)的緊(jin)張顫動(dong)(dong),帶(dai)動(dong)(dong)肘部振抖,通過“軸”的作(zuo)用,腕部及手指自然(ran)也就(jiu)(jiu)帶(dai)動(dong)(dong)弓子快速地(di)左右平(ping)行(xing)運動(dong)(dong)。演奏好顫弓很重要的一點,就(jiu)(jiu)是大(da)臂(bei)(bei)(bei)要微(wei)微(wei)地(di)緊(jin)張,以支撐住小(xiao)(xiao)(xiao)臂(bei)(bei)(bei),小(xiao)(xiao)(xiao)臂(bei)(bei)(bei)以下(xia)部位要相對放(fang)松,做到(dao)上緊(jin)(指大(da)臂(bei)(bei)(bei))下(xia)松(指小(xiao)(xiao)(xiao)臂(bei)(bei)(bei)、腕部及手指)。
7、頓弓
演奏頓(dun)弓(gong)(gong)(gong)時,右手如同(tong)擰螺(luo)絲(si)刀(dao)的(de)(de)動作,輕微敏捷地向(xiang)左(擰松螺(luo)絲(si)的(de)(de)方向(xiang))轉一下(xia),這樣拇指就會對弓(gong)(gong)(gong)桿施加一個力,同(tong)時中指也要向(xiang)外頂一下(xia)弓(gong)(gong)(gong)桿,使弓(gong)(gong)(gong)毛貼(tie)住外弦(xian),配合弓(gong)(gong)(gong)子(zi)短(duan)促的(de)(de)拉推(tui)運(yun)動,以發(fa)出聲(sheng)(sheng)音;當聲(sheng)(sheng)音發(fa)出的(de)(de)瞬間,弓(gong)(gong)(gong)子(zi)要立即(ji)停止(zhi)運(yun)動,右手復(fu)原放松,使弓(gong)(gong)(gong)毛浮在弦(xian)上(不離開弦(xian)),聲(sheng)(sheng)音嘎(ga)然而止(zhi),由此完成(cheng)一個外弦(xian)的(de)(de)頓(dun)弓(gong)(gong)(gong)動作。
8、拋弓
拋弓(gong)(gong)(gong)在演奏(zou)方法上一般(ban)是(shi)(shi)由兩(liang)個(ge)部(bu)分組成的,一部(bu)分是(shi)(shi)一個(ge)短促的跳(tiao)音,以拉弓(gong)(gong)(gong)或推(tui)弓(gong)(gong)(gong)開始均(jun)可,聲音發出后(hou)手臂右旋,將弓(gong)(gong)(gong)子(zi)(zi)順勢(shi)提起;二部(bu)分是(shi)(shi)當(dang)弓(gong)(gong)(gong)子(zi)(zi)下(xia)落至琴筒(tong)時,右手拇(mu)指(zhi)與食指(zhi)稍稍放松(song),中指(zhi)和無名(ming)指(zhi)乘(cheng)勢(shi)向(xiang)下(xia)壓一下(xia)弓(gong)(gong)(gong)毛,以阻止弓(gong)(gong)(gong)子(zi)(zi)上跳(tiao),同時配(pei)合與一部(bu)分相反(fan)的弓(gong)(gong)(gong)向(xiang)運動,這樣受(shou)阻的弓(gong)(gong)(gong)子(zi)(zi)就(jiu)會在琴筒(tong)和弦的反(fan)彈作用下(xia)急速地跳(tiao)動出聲。
9、換把
從(cong)一(yi)個(ge)把(ba)(ba)(ba)位(wei)(wei)向另一(yi)個(ge)把(ba)(ba)(ba)位(wei)(wei)運(yun)動(dong)稱為(wei)(wei)換(huan)把(ba)(ba)(ba),換(huan)把(ba)(ba)(ba)動(dong)作從(cong)低(di)把(ba)(ba)(ba)位(wei)(wei)向高(gao)把(ba)(ba)(ba)位(wei)(wei)換(huan)把(ba)(ba)(ba)時(shi),應以(yi)(yi)大(da)臂(bei)(bei)為(wei)(wei)先動(dong)點向下運(yun)動(dong);由(you)高(gao)把(ba)(ba)(ba)位(wei)(wei)向低(di)把(ba)(ba)(ba)位(wei)(wei)換(huan)把(ba)(ba)(ba)時(shi),應以(yi)(yi)腕部為(wei)(wei)先動(dong)點向上運(yun)動(dong)。在中、慢(man)速換(huan)把(ba)(ba)(ba)時(shi),大(da)臂(bei)(bei)或腕部要(yao)有先行動(dong)作,以(yi)(yi)保(bao)證換(huan)把(ba)(ba)(ba)的連貫性;在快速換(huan)把(ba)(ba)(ba)時(shi),臂(bei)(bei)、腕、手應呈整體運(yun)動(dong),動(dong)作要(yao)敏(min)捷、果斷。
10、揉弦
利(li)用琴弦長度或張力(li)持續變化產(chan)生(sheng)音波的方法,常見的是滾揉(rou),以手(shou)掌的上下擺(bai)動(dong),帶動(dong)手(shou)指(zhi)(zhi)第一(yi)關(guan)節作(zuo)屈(qu)伸運(yun)動(dong),使(shi)指(zhi)(zhi)尖在音位(wei)上均勻地滾動(dong),從而改變弦長產(chan)生(sheng)音波。
11、滑音
滑(hua)音(yin)(yin)(yin)有多(duo)種類型,由較低(di)(di)的音(yin)(yin)(yin)滑(hua)向(xiang)本(ben)音(yin)(yin)(yin)稱(cheng)為上滑(hua)音(yin)(yin)(yin),由較高的音(yin)(yin)(yin)滑(hua)向(xiang)本(ben)音(yin)(yin)(yin)稱(cheng)為下滑(hua)音(yin)(yin)(yin),以三個手指(zhi)聯合運動奏(zou)出的滑(hua)音(yin)(yin)(yin)叫做墊(dian)指(zhi)滑(hua)音(yin)(yin)(yin),從本(ben)音(yin)(yin)(yin)開始滑(hua)向(xiang)較低(di)(di)的音(yin)(yin)(yin)再滑(hua)回(hui)本(ben)音(yin)(yin)(yin)的滑(hua)音(yin)(yin)(yin)稱(cheng)為回(hui)滑(hua)音(yin)(yin)(yin)。演奏(zou)時左手負責(ze)滑(hua)音(yin)(yin)(yin)的快慢,右手負責(ze)滑(hua)音(yin)(yin)(yin)的濃淡(dan)。
12、裝飾音
裝(zhuang)飾(shi)音(yin)(yin)(yin)的種(zhong)類(lei)很多(duo),常用(yong)的有各種(zhong)倚(yi)音(yin)(yin)(yin)和擻音(yin)(yin)(yin),演奏(zou)倚(yi)音(yin)(yin)(yin)一般(ban)要求(qiu)演奏(zou)得輕巧而(er)富有彈(dan)性。在(zai)動(dong)作(zuo)上,左(zuo)手手指要在(zai)掌指關節的運動(dong)下敏捷(jie)地(di)抬(tai)指、擊(ji)弦(xian),觸弦(xian)后迅速反彈(dan)離弦(xian),切忌因手掌動(dong)作(zuo)過大而(er)使演奏(zou)顯得笨拙。擻音(yin)(yin)(yin)又(you)稱單(dan)打音(yin)(yin)(yin),它是打一下本音(yin)(yin)(yin)的上方音(yin)(yin)(yin)來裝(zhuang)飾(shi)音(yin)(yin)(yin)頭(tou)的,因此實際上也就(jiu)是一個雙倚(yi)音(yin)(yin)(yin)。
13、顫指音
在演(yan)奏(zou)本音(yin)的(de)同時,用手指(zhi)連續(xu)快(kuai)速地擊打(da)本音(yin)上方的(de)二(er)度音(yin)或三度音(yin),以發出類似打(da)花舌的(de)聲音(yin),其實際效果為(wei)三十(shi)二(er)分音(yin)符的(de)本音(yin)與上方音(yin)的(de)交替重復。顫指(zhi)音(yin)在演(yan)奏(zou)技法上與按指(zhi)一樣分抬指(zhi)和擊弦(xian)(xian)兩個動作過(guo)(guo)程(cheng):按本音(yin)的(de)手指(zhi)保留在弦(xian)(xian)上,顫音(yin)的(de)手指(zhi)要自然彎曲,由(you)左(zuo)手掌(zhang)指(zhi)關節運動,使(shi)手指(zhi)抬起,隨即(ji)富有彈性地擊弦(xian)(xian);然后利用琴(qin)弦(xian)(xian)對手指(zhi)的(de)反彈力,使(shi)手指(zhi)彈離琴(qin)弦(xian)(xian),繼而再一次擊弦(xian)(xian),如此快(kuai)速往復,即(ji)是顫指(zhi)音(yin)演(yan)奏(zou)的(de)全(quan)過(guo)(guo)程(cheng)。
14、泛音
二(er)胡的泛(fan)(fan)(fan)音(yin)(yin)(yin)分(fen)為(wei)(wei)自然(ran)泛(fan)(fan)(fan)音(yin)(yin)(yin)和人工泛(fan)(fan)(fan)音(yin)(yin)(yin)兩種。自然(ran)泛(fan)(fan)(fan)音(yin)(yin)(yin)即(ji)以千(qian)斤到琴(qin)碼為(wei)(wei)全弦長(chang),取(qu)其幾(ji)分(fen)之一段所(suo)奏(zou)出(chu)的泛(fan)(fan)(fan)音(yin)(yin)(yin);人工泛(fan)(fan)(fan)音(yin)(yin)(yin)是用一指(zhi)實(shi)按(an)某個音(yin)(yin)(yin)位,再以四(si)指(zhi)輕觸(chu)泛(fan)(fan)(fan)音(yin)(yin)(yin)點,即(ji)以一指(zhi)所(suo)按(an)音(yin)(yin)(yin)位到琴(qin)碼為(wei)(wei)全弦長(chang),取(qu)其四(si)分(fen)之一或三分(fen)之一段所(suo)奏(zou)出(chu)的泛(fan)(fan)(fan)音(yin)(yin)(yin)。演奏(zou)泛(fan)(fan)(fan)音(yin)(yin)(yin)時(shi),要做到音(yin)(yin)(yin)位準、貼弦松、弓速快。
15、撥弦
二胡的(de)(de)撥(bo)(bo)(bo)弦(xian)(xian)奏(zou)法分左(zuo)手(shou)勾弦(xian)(xian)、彈(dan)弦(xian)(xian)和右手(shou)的(de)(de)撥(bo)(bo)(bo)弦(xian)(xian),左(zuo)手(shou)以(yi)手(shou)指指面部位(wei)向(xiang)里撥(bo)(bo)(bo)弦(xian)(xian)發聲稱為(wei)勾弦(xian)(xian);左(zuo)手(shou)用手(shou)指指甲部位(wei)向(xiang)外(wai)撥(bo)(bo)(bo)弦(xian)(xian)稱為(wei)彈(dan)弦(xian)(xian);右手(shou)撥(bo)(bo)(bo)弦(xian)(xian)通常以(yi)撥(bo)(bo)(bo)內弦(xian)(xian)居多(duo),其方法是(shi):弓(gong)(gong)子離(li)手(shou),將(jiang)弓(gong)(gong)桿放于(yu)右腿(tui)之上,并使弓(gong)(gong)毛自然地(di)靠著外(wai)弦(xian)(xian),在千(qian)斤與琴碼下三分之一的(de)(de)位(wei)置上,用右手(shou)食指或中指的(de)(de)指面部位(wei)向(xiang)左(zuo)方撥(bo)(bo)(bo)動琴弦(xian)(xian),同(tong)時還(huan)配以(yi)左(zuo)手(shou)的(de)(de)按弦(xian)(xian),以(yi)撥(bo)(bo)(bo)奏(zou)出曲調(diao)來。