Post updated with links, 10 Apr 2010.
Artist/Performers: VA (Song Guosheng, Wu Suhua, Guo Junming, Chen Maojian, Lu Rirong, Wang Guotong)
Album: jiāng hé shuǐ，èrhú yǎnzòuqǔ 江河水，二胡演奏曲 （river water，erhu solos）
Year: not stated， LP is 1980s or older
Company: Art-Tune Company Hong Kong, COL-3132, xiānggǎng yìshēng chàngpiàn gōngsī 香港艺声唱片公司
Format: 12inch vinyl LP 33rpm
A1. hénán xiǎoqǔ 河南小曲 (Henan melody) - Sòng Guóshēng 宋国生 (erhu), Liú Jùntíng 刘俊亭 (yangqin), arranged by Liú Míngyuán 刘明源
A2. jiāng hé shuǐ 江河水 （river water) - Wú Sùhuá 吴素华 (erhu), Liáng Ruìhuá 梁瑞华 (yangqin), arranged by Huáng Hǎihuái 黄海怀
A3. yùběi xùshìqǔ 豫北叙事曲 (Ballad of Northern Henan) - Guǒ Jùnmíng 果俊明 (erhu), Péng Xuěqióng 彭雪琼 (piano), composed by Liú Wénjīn 刘文金
B1. mùrén yuè 牧人乐 (music of herdsman) - Chén Màojiān 陈茂坚 (erhu), Zhāo Rǔkēng 赵汝铿 (yangqin), composed by Zhāng Xīnlín 张鑫林
B2. qínqiāng zhǔtí suíxiǎngqǔ 秦腔主题随想曲 (Theme From Qinqiang Opera) - Lǔ Rìróng 魯日融 (erhu), Liú Dázhāng 刘达章 (yangqin), arranged by Zhāo Zhènxiāo 赵振霄 & Lǔ Rìróng 魯日融
B3. sānménxiá chàngxiǎngqǔ 三门峡畅想曲 (Sanmen gorge capriccio) - Wáng Guótóng 王国潼 (erhu), Zhōu Guǎngrén 周广仁 (piano), composed by Liú Wénjīn 刘文金
Download link is: http://sharebee.com/fdcd9bc4
Filename: River Water, Erhu Solos (Art-Tune LP).zip
Size: 33.6 MB
130vbr mp3 in zip folder inc covers
Half the tracks on this LP are also on the "A Collection of Music Played on the Erhu" set of 10 CDs. The other three I haven't seen on any other albums; Jiang He Shui (river water) played by Wu Suhua, Yubei Xushiqu (Ballad of Northern Henan) played by Guo Junming, and Qinqiang Zhuti Suixiangqu (Theme From Qinqiang Opera) played by Lu Rirong (one of its composers/arrangers).
Apart from the titles and the names of the musicians, the LP doesn't have any other information. I would guess the LP is copied from vinyl records from China and not from the master tapes, probably unofficially, hence the low sound quality.
Wu Suhua has a solo erhu CD called "Chine: L'art de la viele Erhu / China: The Art of the Erhu Fiddle" (Auvidis Ethnic B 6764, 1992).
My favourite track is track 3 "Ballade of Nijiang (Nijiang You)".
She also appears on the CD "Fleuve Jaune; Musique Instrumentale Chinoise / Yellow River; Instrumental Music of China" (Auvidis Ethnic B 6757, 1991)
One of the best tracks from the CD is "píng shā luò yàn" 平沙落雁 Wild geese land on beach (Guan Pinghu version), played by Yang Lining (qin), Francois Picard (xiao), Wu Suhua (erhu), Wang Ying (pipa).