Critical reception of the game was mixed to positive, with a 63% aggregate score at Metacritic. Wii Music was given a score of A− by 1UP.com's Jennifer Tsao, who believed the game has a "surprising depth and flexibility" that rewards players who have mastered the controls. She also felt that the game's four-player custom jam mode was addictive, but lamented the abundance of public domain songs in the soundtrack.
Critical response to the game was split between praise and criticism, with a 63% average score on Metacritic. Wii Music received an A− rating from Jennifer Tsao at 1UP.com, who noted that the game's complexity and adaptability make it rewarding for skilled players. She also found the four-player custom jam mode to be captivating, but was disappointed by the abundance of public domain songs in the soundtrack.