This is the first game in the Mario & Luigi series to not have music composed by Yoko Shimomura, instead being composed by Hideki Sakamoto. According to an interview with Famitsu, this was done as part of the team's efforts to give the series a "fresh start". However, making new music proved to be a challenge, with series creator Shigeru Miyamoto commenting that the music Sakamoto had originally written for the game sounded "too ordinary". This led to the composers adding more bass into the game's score in an effort to incorporate more "Mario-ness" into the soundtrack.