Notre Dame introduced music to its practice routine for the defense this week.
The Irish had blared music during weeks they were preparing for road games for the offense to get accustomed to crowd noise, but coach Brian Kelly said they found the need for the same treatment for the defense for home games after the crowd got loud at the end of last weekend's home win over Pittsburgh.
"We struggled defensively with three or four calls late in the game because our crowd was so loud," Kelly said. "Defensively, you are giving out signals, just like you would on offense, and we missed a couple of them."
Kelly said receiver Robby Toma put a mix together of Hawaiian and Polynesian music for Tuesday practice, though there was no Don Ho, and Wednesday was rock music.
" I don't know what we will do (Thursday)," Kelly said.