He also studied with the leading players of three different schools; Yang Zongji (1865–1933), the leading player in Beijing, the Daoist Qin Heming, and the Buddhist monk Wucheng.
Before 1949, Guan did some teaching at the Yenching University, but had most of his meager income from selling paintings and repairing old musical instruments and furniture.
He also recreated and performed many pieces, including Guangling San (《廣陵散》), Youlan (《碣石調幽蘭》- Secluded Orchid), and Hujia Shiba Pai (《胡笳十八拍》 – Eighteen Songs of a Nomad Flute), that only existed as notation through a process known as dapu (打譜).
Though he trained few prominent students, Guan's numerous recordings – notable for their austerity, subtlety, and bold presentation – have exerted wide and continuing influence.
In 1977, a recording of "Liu Shui" (流水; Stream), as performed by Guan, was chosen to be included in the Voyager Golden Record, a gold-plated LP recording containing music from around the world, which was sent into outer space by NASA on the Voyager 1 and Voyager 2 spacecraft.