Question: Who was the lead vocalist of a song which reached number one on the "Billboard" Alternative Songs chart in August 2014, produced by Big Data?
Context: "Panic Switch" is a song by the American alternative rock band Silversun Pickups.  It was the first single released from the group's second album, "Swoon" (2009), on March 17, 2009.  The song reached number one on the "Billboard" Alternative Songs chart, becoming their first number-one single on any Billboard chart.  "Panic Switch" was the first song by an independent artist to reach number one on the chart in 11 years.  After a one-week stay at number one, it spent 11 weeks at number two behind Linkin Park's "New Divide".  It is also their first Hot 100 entry, peaking at number 92. "Ho Hey" is a song by American folk rock band the Lumineers.  It was released on June 4, 2012, as the lead single from their debut self-titled studio album.  The music video was released on March 11, 2012.  "Ho Hey" reached number one for 18 non-consecutive weeks on the "Billboard" Rock Songs chart, as well as two weeks in the top spot on the "Billboard" Alternative Songs chart and eight weeks in the top spot on the Adult Pop Songs chart, and reached number 3 on the "Billboard" Hot 100 chart, becoming their first single to do so, as well as their first top 5 single.  It is also their first single to be certified in the US. "Dangerous" is a song by American electronic music project Big Data, from their debut EP "1.0" (2013) and their debut studio album "2.0" (2015).  It features American indie rock band Joywave, with vocals being performed by the band's lead singer Daniel Armbruster. Big Data is an American electronic music project created by producer, Alan Wilkis.  Big Data is best known for its single "Dangerous", featuring Joywave, which reached number one on the "Billboard" Alternative Songs chart in August 2014, and was certified gold by the RIAA in May 2015. "Animal" is the lead single from Neon Trees' debut studio album, "Habits".  It debuted in June 2010 at number 100 on the "Billboard" Hot 100 and has reached a peak of number 13 in its twenty-two week on the chart.  In Canada, the song debuted at number 95 on the Canadian Hot 100 and has climbed to number 29.  The song has reached number one on the "Billboard" Alternative Songs chart after 32 weeks, making "Animal" their first number-one song on a "Billboard" chart.  This also broke the record for the longest-length of time for a song to get to the top of that list after entering.  The song reached number two on the "Billboard" Rock Songs chart.  In one of the music videos of the song, the band is destroying an art gallery.  On May 22, 2011, the song won Top Alternative Song in the 2011 "Billboard" Music Awards. American singer Selena released twenty-seven official singles, seven promotional singles, and made five guest vocalist appearances.  Her career began as the lead vocalist of Los Dinos in 1980.  Her albums with Los Dinos on indie labels failed to achieve any chart success.  In 1987, her cover of Ritchie Valens' "La Bamba" peaked at number 19 on the United States "Billboard" Hot Latin Songs chart, her first entry.  She signed with EMI Latin nine years later as a solo artist though her band continued to tour with her.  Selena appeared on "Buenos Amigos" with Salvadoran singer Álvaro Torres.  The track peaked at number one on the U.S. Hot Latin Songs chart in 1991, the singer's first number one song.  Subsequent singles, "Baila Esta Cumbia" and "Como la Flor", became popular songs on Mexican radio, with "Como la Flor" launching the singer's career in that country.  "Como la Flor" peaked at number six on the Hot Latin Songs chart, despite popular culture claims that it was the singer's first number one single.  The track has charted on the U.S. Regional Mexican Digital Songs list since its inception in 2010 and remains the singer's signature number and most popular recording. Mikey Perfecto, (Miguel A. Soto Cordova), is a Puerto Rican reggaeton recording artist.  He was first thrusted into the music scene as the lead vocal, leader, and songwriter for the Latin urban music group, 3-2 GET FUNKY.  With 3-2 Get Funky, Mikey Perfecto recorded 5 studio albums from 1993 to 1998.  He recorded his first solo album in 1999, "Angel Perdido", a mixture of salsa, hip hop, and reggaeton urban music.  His second studio album "Evolucion Arrestada" (2004) reached number nineteen on the "Billboard" Tropical Albums chart.  The lead single "La Matadora" featuring fellow recording artist Daddy Yankee reached number thirty-five on the "Billboard" Tropical Songs chart.  Perfecto was featured on Cuban singer Celia Cruz's 2002 hit single "La Negra Tiene Tumbao".  It reached number thirty on the "Billboard" Latin Songs chart and number four on the "Billboard" Tropical Songs chart.  The song received nominations for Record of the Year, Song of the Year, and Music Video of the Year at the Latin Grammy Awards of 2002.  The parent album won the Latin Grammy Award for Best Salsa Album.  It was nominated for Album of the Year.  The song was also nominated Tropical Song of the Year at the 2003 Lo Nuestro Awards.  Mikey Perfecto whose real name is Miguel Angel Soto Cordova, obtained a master's degree in Social Work and a post-master's degree in Clinical Social Work from the Doctorate Program of the Interamerican University Of Puerto Rico.  He is the author of the Book “En Cuerpo y Alma” (La Autobiografía de Mikey Perfecto) where he details his struggles and challenges during the first wave of Puerto Ricos’ urban artist movement.  He currently works with troubled youth, and communities afflicted by poverty, addiction, and other obstacles produced by these conditions. Joywave is an American indie rock band from Rochester, New York, consisting of members Daniel Armbruster (vocals), Joseph Morinelli (guitar), Sean Donnelly (bass), Benjamin Bailey (keyboards), and Paul Brenner (drums).  The band first became known for its collaboration with electronic music project Big Data, "Dangerous", which peaked at number one on the "Billboard" Alternative Songs chart in 2014.  After releasing two EPs, their debut album, "How Do You Feel Now? ", was released on Cultco Music/Hollywood Records in 2015.  Their second album, "Content", was released on July 28, 2017. Declan Benedict McKenna (born 24 December 1998) is an English singer, songwriter and musician.  He initially gained recognition for winning the Glastonbury Festival's Emerging Talent Competition in 2015.  McKenna self-released the song "Brazil", a protest song criticising FIFA and the 2014 FIFA World Cup held in Brazil, as his debut single in December 2014.  It gained recognition after its re-release in August 2015.  It reached number one on Sirius XM Radio's Alt Nation Alt 18 Countdown for 23 January 2016 and held that spot for three weeks.  The song also reached number 16 on the U.S. "Billboard" Alternative Songs chart, number 45 in Japan and number 135 in France.  His popularity attracted the attention of many major music labels; he eventually signed to Columbia Records in 2016. The discography of American rock band A Day to Remember consists of six studio albums, three video albums, three extended plays and thirteen singles.  The band signed to Indianola in February 2005 and released their debut album "And Their Name Was Treason" a few months later.  Their second album, "For Those Who Have Heart", was released in January 2007 and peaked at number 17 on the Heatseekers Album chart in the US; a re-release charted at number 43 on the Independent Albums chart in the US.  Released in February 2009, "Homesick" charted at number 21 on the "Billboard" 200 chart and at number 1 on the Independent Albums chart.  From the album, only the "Have Faith in Me" single charted; at number 40 on the Alternative Songs chart.  Second single "Downfall of Us All" and album track "If It Means a Lot to You" were both certified Gold by the RIAA for 500,000 downloads each.  Fourth album "What Separates Me from You" (2010) debuted at number 11 on the "Billboard" 200 and its lead single "All I Want" peaked at number 12 on the Alternative Songs chart.  Fifth album "Common Courtesy" (2013) was first released only digitally due a legal label dispute; a physical release followed later.  The band released their sixth album, "Bad Vibrations", in 2016.
Answer: Daniel Armbruster