Plus: Carrie Underwood’s “The Champion” scores a 444 percent boost.

Super Bowl LII served up some super-size sales gains for halftime show headliner Justin Timberlake, according to initial sales reports to Nielsen Music. Collectively, sales of the songs he performed during the halftime show gained 534 percent in the U.S. on Feb. 4, the day of the Super Bowl, compared to Feb. 3.

Timberlake’s halftime tunes -- including his virtual duet with Prince on the latter’s “I Would Die 4 U” -- sold 38,000 downloads on Feb.  4, up from 6,000 a day earlier. (Not including “I Would Die 4 U,” the sales of the Timberlake-only tracks rose 521 percent to 36,000, up from 6,000 the day before.)

The biggest seller among all of the songs Timberlake performed was his most recent No. 1 on the Billboard Hot 100, 2016’s “Can’t Stop the Feeling!” The tune closed out the halftime show and sold nearly 8,000 downloads on Feb. 4 (up 482 percent from just 1,000 sold a day earlier). Timberlake’s second biggest seller was a more recent track, “Filthy,” the lead single from his new album Man of the Woods. “Filthy” sold 6,000 downloads on Feb. 4, and its sales were certainly enhanced by promotion surrounding Woods, which was released Friday (Feb. 2).

Aside from Timberlake’s gains, Carrie Underwood notches a particularly notable Super Bowl-related sales increase.

A video performance of Underwood singing her new single “The Champion,” featuring Ludacris, introduced the TV broadcast of the Super Bowl game itself. That robust placement of the song and video yielded a big 444 percent sales gain for the track: it jumped to 16,000 downloads sold on Feb. 4 (up from 3,000 a day earlier).

News on streaming gains for the performed songs will likely be announced on Feb. 6.