Question: Starving, is a song by American actress and singer Hailee Steinfeld, and which American electronic music duo group?

Context paragraphs:
Let Me Go (Hailee Steinfeld and Alesso song): "Let Me Go" is a song by American singer Hailee Steinfeld and Swedish DJ and record producer Alesso, featuring American country music duo Florida Georgia Line and American singer-songwriter Andrew Watt.  It was written by Ali Tamposi, Brian Lee, Jamie Lidell, Alesso and Watt, with production handled by the latter two.  The song was released through Republic Records on September 8, 2017.

Show You Love (Kato and Sigala song): "Show You Love" is a song by Danish DJ Kato and British DJ Sigala.  It features the vocals of American singer Hailee Steinfeld.  The song is a re-release of the 2015 song "Show You Love" Kato vs. Sigala featuring Grace Tither.

Rock Bottom (Hailee Steinfeld song): "Rock Bottom" is a song by American actress and singer Hailee Steinfeld featuring American funk pop band DNCE.  It was released on March 1, 2016, through Republic Records and Universal Music Group, as the second single from her debut extended play (EP), "Haiz" (2015).  The song was written by Mattias Larsson, Robin Fredriksson, Julia Michaels, and Justin Tranter, with production being handled by Larsson and Fredriksson under their stage name Mattman & Robin.

Haiz (EP): Haiz (stylized as HΔIZ) is the debut extended play (EP) by American actress and singer Hailee Steinfeld.  It was released on November 13, 2015, by Republic Records.  The EP was preceded by the lead single, "Love Myself", which has reached the top 40 on multiple international singles charts.  The second single, "Rock Bottom", featuring the band DNCE was released on February 27, 2016.

Love Myself: "Love Myself" is the debut single by American actress and singer Hailee Steinfeld.  It was released on August 7, 2015, through Republic Records and Universal Music Group, as the lead single from her debut extended play (EP), "Haiz" (2015).  The song was written by Mattias Larsson, Robin Fredriksson, Oscar Holter, Julia Michaels, and Justin Tranter, with the production being handled by Holter, with Larsson and Fredriksson under their stage name Mattman & Robin.  It is also included on the soundtrack to the 2015 film, "Jem and the Holograms".

At My Best: "At My Best" is a song by American rapper Machine Gun Kelly, featuring American singer Hailee Steinfeld.  It was released on March 17, 2017 via Bad Boy and Interscope.  It is Machine Gun Kelly's second single to enter "Billboard" Hot 100 after his 2016 collaboration with Camila Cabello, "Bad Things".

Digital Love (Digital Farm Animals song): "Digital Love" is a single by electropop songwriter and record producer Digital Farm Animals, featuring vocals from American actress and singer Hailee Steinfeld.  It was released on 3 February 2017, through Tim & Danny Music.

Starving (song): "Starving" is a song by American actress and singer Hailee Steinfeld and American duo Grey, featuring Russian-German producer Zedd.  The song was written by Grey members Michael Trewartha and Kyle Trewartha, Robert McCurdy, Christopher Petrosino, and Asia Whiteacre.  It was released on July 15, 2016, through Republic Records and Universal Music Group.  "Starving" is included on the deluxe edition of Steinfeld's debut extended play, "Haiz" (2015).  It serves as the record's third and final single.

Hailee Steinfeld discography: American actress and singer Hailee Steinfeld has released one extended play, nine singles (including five as a featured artist), one promotional single and other album appearances.  Her debut extended play, "Haiz", was released on November 13, 2015, by Republic Records. " Love Myself" was released on August 7, 2015, as the lead single from "Haiz" and a forthcoming full-length studio album.  It debuted on the "Billboard" Pop Songs airplay chart at number 27, marking the highest debut for a solo female artist on the chart since "Torn" entered at number 26 in 1998, and eventually reached a peak position of number 15.  It also peaked at number 30 on the "Billboard" Hot 100 and reached the top 40 on the singles charts in six other countries, including Canada, New Zealand, and Sweden.

Grey (musical duo): Grey are an American electronic music duo consisting of brothers Kyle and Michael Trewartha.  They are best known for their debut single "Starving", a collaboration with American singer Hailee Steinfeld, featuring production work from Russian-German DJ Zedd.  Kyle Trewartha was formerly known as Singularity, under which name he released numerous remixes and original tracks to SoundCloud.  Their debut EP "Chameleon" was released on September 29, 2017.  On September 8, 2017, the EP's first single featuring Skott, "Crime", was released.

Supporting paragraphs: Starving (song) Grey (musical duo)
Answer: Grey