New EP '7' bows at No. 1 on the Top R&B/Hip-Hop & Top Rap Albums tallies.

For all the success that Lil Nas X has already earned on Billboard's charts, this might be his biggest week yet.

As previously reported, "Old Town Road," featuring Billy Ray Cyrus, tops the Billboard Hot 100 (dated July 6) for a 13th week, becoming the longest-running No. 1 for a hip-hop song ever.

Meanwhile, his EP 7 debuts at No. 1 on the Top R&B/Hip-Hop Albums and Top Rap Albums charts with 77,000 equivalent album units, according to Nielsen Music. As first reported, the set starts at No. 2 on the all-genre Billboard 200.

Of the EP's 77,000 units, 4,000 were in album sales (all from digital downloads, as the set was not available in any physical format). The set was driven largely by streaming activity, having collected 8,000 in TEA units and 66,000 SEA units. The latter sum equates to 90.4 million on-demand audio streams of its songs during the tracking frame, making the effort the most-streamed album of the week.

Hot 100 debuts: Two tracks from the eight-song 7 (which includes both the Cyrus remix and original Lil Nas X-only version of "Road") arrive on the Hot 100: "Panini" at No. 16 and "Rodeo," with Cardi B, at No. 22, marking his second and third entries on the chart.

Hip-hop hits: "Panini" and "Rodeo" concurrently debut on Hot R&B/Hip-Hop Songs at Nos. 9 and 12, respectively. On Hot Rap Songs, they launch at Nos. 7 and 10. "Road" rules both lists for a 13th week.

Ready to rock: The genre-bending Lil Nas X also makes his first appearances on Billboard rock charts, as two other tracks from 7, "F9mily (You & Me)" and "Bring U Down" (featuring Ryan Tedder), debut at Nos. 6 and 7, respectively, on Hot Rock Songs.

The cuts enter Rock Streaming Songs at Nos. 11 and 21 with 5.4 million and 4.4 million U.S. streams, respectively.