The singer behind the song "Attention" is Charlie Puth, and "How Long" is another single by the same artist from his album Voicenotes. The two tracks were released in 2017 and helped establish Puth as a leading pop artist with a blend of R&B-inflected funk and soul influences. Details:

• Attention: Released as the lead single on April 21, 2017, and featured on the album Voicenotes (2018). It became a top-ten hit in multiple countries and is widely regarded as Puth’s signature song.

• How Long: Released as the second single on October 5, 2017, from Voicenotes, continuing the funk/soul-inflected pop sound and achieving notable chart success in several regions while peaking at number 21 on the US Billboard Hot 100.

If you’d like, I can pull up exact chart positions by country, release dates, or explain how the production and songwriting contributed to their success.