The Bird Twitters from Altedena (2013) depicts the beautiful sceneries in Altadena, California, particularly the birds in Mother Nature. 7 “birds” displaying 7 different landscapes were presented. Inspired by footages of Guo’s virtuosic performances, composer Joan Huang dedicated the piece to Guo and the renowned New England Conservatory of Music Percussion Ensemble. The work utilises a variety of woodwind instruments, all played by Guo, including the Chinese instruments Xun, Paixiao, Hulusi as well as the Australia didgeridoo which symbolises bird calls.

Almost 100 percussions instruments including wind chimes, rain stick, bird whistles, harmonica and horns were used to represent the environment. Seven different American folk songs were adapted to present the picturesque countryside. This performance brings harmony between the authentic Chinese sounds and tones of the universe.