Question: Are Some Velvet Sidewalk and X Ambassadors both American rock bands?

Context paragraphs:
Love Songs Drug Songs: Love Songs Drug Songs is the second EP by American rock band X Ambassadors, released on May 7, 2013.  It spawned one single: "Unconsolable".

Unsteady (song): "Unsteady" is a song by American rock band X Ambassadors.  It was released as the third single from the band's debut studio album, "VHS", on October 13, 2015.  The song has a remix version entitled "Unsteady (Erich Lee Gravity Remix)", a single for the motion picture soundtrack for the film "Me Before You.

The Reason (EP): The Reason is the third EP by American rock band X Ambassadors, released on January 27, 2014.  It spawned two singles: "Unsteady" and "Jungle".

VHS (album): VHS is the debut studio album by American rock band X Ambassadors.  It was released on June 30, 2015 by KIDinaKORNER and Interscope Records.  The album has spawned four singles, "Jungle", "Renegades", "Unsteady", and "Low Life".

Ahead of Myself (X Ambassadors song): "Ahead of Myself" is a song recorded by American rock band X Ambassadors for their upcoming second studio album.  It was released as a single on July 21, 2017 by KIDinaKORNER and Interscope.

Jungle (X Ambassadors and Jamie N Commons song): "Jungle" is a song by American rock band X Ambassadors and British blues rock singer Jamie N Commons.  It was released as a single on 18 December 2013 by KIDinaKORNER and Interscope.  The track appeared on X Ambassadors' 2014 EP "The Reason" and their 2015 studio album "VHS".

X Ambassadors: X Ambassadors (also stylized XA) is an American rock band from Ithaca, New York.  It currently consists of lead vocalist Sam Harris, keyboardist Casey Harris, lead guitarist Noah Feldshuh, and drummer Adam Levin.  Their most notable songs include "Jungle", "Renegades", and "Unsteady".  The band's debut full-length album, "VHS", was released on June 30, 2015.

Cannonball (Skylar Grey song): Cannonball is a single released by American singer and songwriter, Skylar Grey.  The song was written by Grey, Sam Harris, Noah Feldshuh, Casey Harris, Adam Levin and Alex da Kid, produced by the latter, and features the band X Ambassadors.  "Cannonball" is on "FIFA 16" soundtrack, and was announced by "The Independent".  It received official digital release on September 25, 2015 "Cannonball" will support the US collaborative tour between Grey and X Ambassadors.  The song sold around 25,000 digital copies in the United States.

Some Velvet Sidewalk: Some Velvet Sidewalk was an experimental lo-fi rock band from Olympia, WA on the independent label K Records.

Renegades (X Ambassadors song): "Renegades" is a song by American rock band X Ambassadors.  It was released as the second single from the band's debut studio album "VHS" on March 3, 2015.  It peaked inside the top ten in ten countries, including France, Germany, Canada and Poland, where it reached number one.  In the United States, the song peaked at number 17 on the "Billboard" Hot 100 and was certified Platinum by the RIAA.  The song was nominated for the "Top Rock Song" award at the 2016 "Billboard" Music Awards.

Supporting paragraphs: Some Velvet Sidewalk X Ambassadors
Answer: yes