However, this cipher does not work for the lyrics of "Follow the Nightingale." If each individual letter is reversed, some comprehensible lyrics are able to be read (such as "ATTAMIJAHAHIRA TAGONOM" becoming , and "ATERA REGANAHIAS" becoming ), however this does not work in all cases. "Say Goodbye & Good Day," in comparison, is a pop song, arranged with a standard band backing (bass, guitar, drums) and piano, with without complex chorus work. Kokia described "Say Goodbye & Good Day" as being a refreshing song. On her decision to use the word "goodbye" (despite its sad implications), she notes she chose it to give the feeling of "advancing to the next step." "Follow the Nightingale" and "Say Goodbye & Good Day" were used as the theme song for the game Tales of Innocence, which was released 16 days later on the 6th of December. Kokia featured in several minor media outlets in promotion of the single, such as internet TV show Ameba Studio on November 24, the NHK TV show Manga Yawa on the 29th, and on the Nippon Broadcasting radio show Mucomi on December the 6th. She also had a feature article in Shūkan Famitsū in the December 14 issue. On December 22, 2007, Kokia performed "Follow the Nightingale" at the 2008 Jump Festa anime/game expo. The song debuted at #23 on Oricon's daily singles chart, peaking at #22. For her first week, Kokia's single peaked at #33, selling 4,600 copies. The single charted for nine weeks, selling a total of 12,000 copies in this time. Because of this, "Follow the Nightingale" is Kokia's fourth best selling single, after "The Power of Smile/Remember the Kiss," "Kawaranai Koto (Since 1976)" and "Ai no Melody/Chōwa Oto (With Reflection)".