Complex sentence: "Hello" is a song by English singer Adele, released on 23 October 2015 by XL Recordings as the lead single from her third studio album, "25" (2015).
Split into simpler sentences: Hello is a song by English singer Adele. It was released on 23 October 2015 by XL Recordings as the lead single from her third studio album, "25" (2015).