what artist have sung in two part sectors and what are the names of the songs

Your question needs clarifying. Do you mean that the same vocalist sang both parts? Do you mean that the song had two parts? We can not help you unless you are specific.

To find out which artists have sung in two different genres or sectors, you can follow these steps:

1. Search for artists who are known for versatility or cross-genre collaborations. Many artists explore different musical styles, branching out into diverse genres throughout their careers.

2. Consult music databases, such as AllMusic or Discogs, that provide comprehensive discographies and genre classifications for artists. These platforms let you filter artists by their involvement in multiple genres, making it easier to identify those who have sung in two different sectors.

3. Look for specific song titles that highlight an artist's exploration of multiple genres. Some artists may create tracks that seamlessly blend two distinct styles within one song, while others might release separate tracks in different sectors.

Remember, the term "sector" is not widely used in the context of music genres. However, I assume you are referring to different musical styles or genres. Here are a few examples of artists known for singing in different sectors:

1. Madonna: She has sung pop music for a significant portion of her career but has also explored dance, R&B, and electronic genres. Some of her notable tracks include "Like a Prayer" (pop/rock), "Vogue" (dance-pop), and "Frozen" (electronic).

2. Justin Timberlake: Known for his pop music, Timberlake has also delved into R&B and funk. Songs like "Cry Me a River" (pop), "Back" (electronic/R&B), and "Can't Stop the Feeling!" (pop/funk) showcase his versatility.

3. Billie Eilish: While primarily known for her alternative pop and electropop sound, Eilish's music incorporates elements from multiple genres. Songs like "Bad Guy" (alternative pop), "You Should See Me in a Crown" (electronic/indie pop), and "When the Party's Over" (acoustic pop) display her experimentation.

These are just a few examples, and there are countless other artists who have explored different musical sectors throughout their careers.