"Slow Voice". According to the query information, the music for the float parade in Jinan Sunac Park on summer nights is "Slow Sound". "Slow Voice" is a folk song sung by mainland Chinese male singer Cui Kaichao. It was written by Cui Kaichao, composed by Liu Yang, and mixed by Zhou Cheng. The song is included in Cui Kaichao's first solo album "Speeding Carriage" released on March 26, 2017.