The song "Bi" (び, pronounced like "bee") is notable for containing an 8-measure long, 16th note jackhammer section (a section of hitting the same button continuously) in its Maximum Chart. Fittingly, the jackhammer in question is the B Button.

When brought over to Dance Dance Revolution A20, and later A20 Plus, the Challenge Chart for the song references this section, using down arrows for its jackhammer, mirroring the position of the B Button in Sound Voltex.