In August 1921, the composer and violinist Henry Eichheim (爱希汉, 1870–1942), with his wife and daughter, made a journey to Wuxi to visit the great Wu Wanqing 吴畹卿 (1847–1927), leader of the prestigious Tianyun she 天韻社 Kunqu society, which dated back to the late Ming. Wu now arranged a series of seven private evening concerts for Eichheim. 
Apart from the main programme of unstaged Kunqu, the hosts performed solos for qin and pipa, “silk-and-bamboo” ensemble pieces—and Shifan gu and Shifan luogu, staple instrumental components of the local Daoists’ ritual repertoire, which Yang Yinliu was later to document in two definitive monographs. (Note how I avoided the dangerous term “Daoist music” there!) 
Shifan gu and Shifan luogu under the more monitored conditions of Maoism.
The concerts ended with Eichheim himself playing a selection of WAM violin pieces accompanied by his wife on piano—I can’t find a list of items, but I like to imagine that they included Kreisler’s Tambourin chinois (1910).
Among the musicians that Wu Wanqing assembled was his pupil Yang Yinliu, still only 22. Already a pupil of the American missionary Louise Strong Hammond, he now served as translator for Eichheim.
After trips to Japan, Korea, and India, Eichheim returned alone to a snowy Wuxi in December that year to hear more Shifan luogu. As Yang recalled,
I asked why he wanted to hear shi-fan-luo-gu again. He said that in the intervening months he had travelled to many countries, but this is the music that impressed him the most.
They played from 2 to 7.30pm, before Yang took Eichheim to the train station to rejoin his wife and daughter in India.
Later he also made trips to Indonesia. He was among many composers inspired by the soundscape of the Mystic East, including Ravel and Colin McPhee (but not Berlioz…)—though the influence of gamelan in his works, such as his symphonic variations Bali (1931), is not always audible.
Eichheim’s instrument collection is now housed at USCB. I wonder if any further records, such as photographs, survive of his visits to Wuxi. If only there were recordings! Perhaps it would be too much to expect Yang Yinliu to have taken him to film the rituals of the Daoists…
 See my Folk music of China, p.248 (amidst an introduction to the Shifan genres, pp.252–69), and Peter Micic, “Gathering a nation’s music”, p.96, both based on Yang Yinliu, Shifan luogu (1980), pp.233–4. In my post on Yang I cited his earlier volume with Cao Anhe on Shifan gu. For the Tianyun she, see also Zhongguo xiqu zhi, Jiangsu juan 中国戏曲志, 江苏卷 p.726.
 Despite my aversion to the term “Daoist music”, two volumes by Qian Tieming 錢鐵明 et al., Wuxi daojiao keyi yinyue yanjiu 無錫道教科儀音樂研究 (Taipei: Xinwenfeng, 1999) are substantial. Still, there is a wealth of research on Daoist ritual around the Jiangnan region that doesn’t pluck soundscape out of its ritual context—notably in recent years from Tao Jin 陶金 in Suzhou, Shanghai, and so on.