https://www.youtube.com/watch?v=YQHsXMglC9A

A beautiful, honest and heartful song about hurting a loved person and the seeming impossibility of letting that person know how much having done that is regretted.

- Frist music video to be shot using IMAX cameras:

http://www.comingsoon.net/extras/trailers/625429-adeles-hello-video-imax

It was written by a professional song writer.

https://en.wikipedia.org/wiki/Greg_Kurstin

such a strong voice.... wish there where more vocals like these in the music biz.

Kurstin appears to have produced and co-written the song with Adele.

Kuristin is credited as having done bass, guitar, piano, and keyboards while Adele is credited as a drummer.

http://www.billboard.com/articles/columns/chart-beat/6738449/radio-on-adele-hello-she-can-make-you-feel-what-she-feels

When it comes to the lyircs I suppose it was co-written by both of them, though the song lyrics seem to have a personal attachment to Adele:

“I felt all of us were moving on, and it’s not about an ex-relationship, a love relationship, it’s about my relationship with everyone that I love. It’s not that we have fallen out, we’ve all got our lives going on and I needed to write that song so they would all hear it, because I’m not in touch with them.”

http://www.mirror.co.uk/3am/celebrity-news/adele-fame-toxic-touring-lonelypeople-6693239

Yes.