KAT-TUN's Comeback Single Sits at No. 1 as Avicii's Songs Chart on Japan Hot 100

Amy Sussman/Invision/AP

Avicii photographed on Aug. 30, 2013 in New York City. 

<a href="/music/KAT-TUN">KAT-TUN</a>'s comeback single, "Ask Yourself," rules this week's Billboard Japan Hot 100 chart dated April 16 to 22. The now three-member J-pop boy band had gone into hiatus two years ago but returned this year on Jan. 1. The CD sold 144,979 copies in its first week and came in at No. 1 for physical sales, No. 2 for look-ups, and No. 11 for Twitter mentions.

Still holding the No. 2 spot on the Japan Hot 100 is <a href="/music/Kenshi-Yonezu">Kenshi Yonezu</a>'s "Lemon." The song rules downloads for the 10th week in a row and look-ups for the fourth, but stepped down a notch to No. 2 for video views, ceding the No. 1 position where it had stayed for seven weeks to <a href="/music/TWICE">TWICE</a>'s "What is Love?" However, it's still accumulating points in other metrics as well, including radio airplay (No. 19) and physical sales (No. 15), keeping the long-lasting hit hovering in its current position.

The news of <a href="/music/Avicii">Avicii</a>'s sudden passing devastated fans around the world, and Japan was no exception. Three of his songs -- "Wake Me Up!" (No. 17), "Waiting For Love" (No. 59) and "The Nights" (No. 87) -- have charted in the Japan Hot 100. These tracks were fueled by video views, streaming, downloads and Twitter points. "Wake Me Up" also gained significant radio airplay points, showing that fans and the media in Japan are also remembering the 28-year-old DJ and producer's music.

<a href="/music/Nogizaka-46">Nogizaka46</a>'s "Synchronicity" rises 19-8 on the Japan Hot 100 after the song was made available for download and streaming. The song is currently at No. 2 for downloads, No. 8 for streaming, No. 6 for Twitter, No. 11 for radio, and No. 21 for video views this week, and is expected to leap to No. 1 on the Japan chart when the CD goes on sale next week. 

The Billboard Japan Hot 100 combines physical and digital sales, radio airplay, Twitter mentions, YouTube and GYAO! video views, Gracenote look-ups and audio streams from Apple Music, AWA, Google Play Music, KKBOK, LINE MUSIC, Rakuten Music, Recochoku provided by Gfk Japan, as well as streaming counts based on lyrics displayed on PetitLyrics.

Billboard Japan Hot 100 Top 20 (dated April 16 to 22)
1. Ask Yourself / KAT-TUN
2. Lemon / Kenshi Yonezu 
3. SEXY SEXY / Juice=Juice
4. I Love You / Kana Nishino
5. Kimi No Achoo! / Last Idol
6. What is Love? / TWICE
7. Glass Wo Ware! / Keyakizaka46
8. Synchronicity / Nogizaka 46
9. Take Me Under / MAN WITH A MISSION
10. Kagami No Naka Kara / Maneki Ketya
11. Doraemon / Gen Hoshino
12. ZERO / Masaharu Fukuyama
13. ∀NSWER / Mirei Hayasaka
14. Sayonara Elegy / Masaki Suda 
15. Shape Of You / Ed Sheeran
16. Change / ONE OK ROCK
17. Wake Me Up! / Avicii
18. Uchiage Hanabi / DAOKO X Kenshi Yonezu
19. Just The Way You Are / EXILE ATSUSHI
20. DNA / BTS