Question: Who is the American country music singer who is proficient in more than thirty instruments and whose We're Not Invisible tour was opened by Dan+Shay? 

Context paragraphs:
How Not To: "How Not To" is a song recorded by American country music duo Dan + Shay for their second studio album, "Obsessed" (2016).  Written by Adam Hambrick, Paul DiGiovanni, and Kevin Bard, the song is one of only two tracks on the album not co-written by Dan and Shay.  It was released to country radio September 26, 2016 through Warner Bros.  Nashville as the album's second single.

Dan + Shay: Dan + Shay is an American country music duo composed of vocalists and songwriters Dan Smyers and Shay Mooney.  They are signed to Warner Bros.  Records Nashville and have released two albums, "Where It All Began" which produced three Top 40 singles on Hot Country Songs and Country Airplay, and "Obsessed".

When I Pray for You: "When I Pray for You" is a song recorded by American country music duo Dan + Shay for the soundtrack to the 2017 drama film, "The Shack".  Written by group members Shay Mooney and Dan Smyers with Justin Ebach and Jon Nite, the song is told from the perspective of a father-to-be and describes the unconditional love a parent feels for their child.  Smyers also co-produced the track with Scott Hendricks and Scott Johnson.  It was released February 3, 2017 through Atlantic Records as the soundtrack's third promotional single.  It was expected to impact country radio in late February 2017, however this release did not materialize.

Road Trippin' (Dan + Shay song): "Road Trippin'" is a song recorded by American country music duo Dan + Shay for their second studio album, "Obsessed" (2016).  Group members Dan Smyers and Shay Mooney co-wrote the song with Martin Johnson, who co-produced the track with Smyers.  "Road Trippin'" was selected as a single by a fan vote and released to country radio July 17, 2017 as the record's third single.

19 You + Me: "19 You + Me" is a debut song by American country music duo Dan + Shay.  It was released in October 2013 as the first single from their debut album for Warner Bros.  Records.  The album, "Where It All Began", was released on April 1, 2014.  The song was written by Dan + Shay and Danny Orton.  It received 59 adds in its first week at country radio, becoming the most added debut single of 2013.

I Like the Sound of That: "I Like the Sound of That" is a song by American country music group Rascal Flatts.  It was released in August 2015 as the fourth and final single from their album "Rewind".  The song was written by Jesse Frasure along with American singer Meghan Trainor and Shay Mooney of the American country music duo Dan + Shay.

We're Not Invisible Tour: The We're Not Invisible Tour was the third headlining tour by American country musician Hunter Hayes.  The tour was opened by Dan + Shay and Danielle Bradbery.  The tour began on March 20, 2014, in Pikeville, Kentucky and ended on May 31, 2014, in Estero, Florida.

Nothin' Like You: "Nothin' Like You" is a song recorded by American country music duo Dan + Shay for their debut studio album, "Where It All Began" (2014).  The song was written by group members Dan Smyers and Shay Mooney along with Chris DeStefano and Ashley Gorley.  The song is about Shay's ex-girlfriend Veronica Ballestrini, who is also a country-pop singer

Show You Off: "Show You Off" is a song recorded by American country music duo Dan + Shay for their debut studio album, "Where It All Began" (2014).  The uptempo country track was written by group members Dan Smyers and Shay Mooney along with Danny Orton, and was produced by Smyers with additional production by Orton and Scott Hendricks.  It was released through Warner Bros.  Records on May 12, 2014 as the second single from the album.  "Show You Off" was well received by country radio, becoming the most-added track in its debut week.

Hunter Hayes: Hunter Easton Hayes (born September 9, 1991) is an American country music singer, songwriter, and multi-instrumentalist.  He is proficient at more than thirty instruments and is signed to Atlantic Records Nashville.

Supporting paragraphs: We're Not Invisible Tour Hunter Hayes
Answer: Hunter Hayes