Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Fiestar
Table title:
Music videos
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Song title </th><th colspan=1 rowspan=1 > Album </th><th colspan=1 rowspan=1 > Released </th><th colspan=1 rowspan=1 > Length </th><th colspan=1 rowspan=1 > Director/Production House </th><th colspan=1 rowspan=1 > Note </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=4 > 2012 </td><td colspan=1 rowspan=1 > "Sea of Moonlight" (with IU) </td><td colspan=1 rowspan=1 > LOEN Tree Summer Story </td><td colspan=1 rowspan=1 > July 26 </td><td colspan=1 rowspan=1 > 3:43 </td><td colspan=1 rowspan=3 > Hwang Soo-ah (LOEN Entertainment In-house / Film Production Korea) </td><td colspan=1 rowspan=1 > Special collaboration </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > "Vista" </td><td colspan=1 rowspan=2 > Vista (single) </td><td class="highlighted"  colspan=1 rowspan=1 > August 31 </td><td colspan=1 rowspan=1 > 5:11 </td><td class="highlighted"  colspan=1 rowspan=1 > Debut music video. </td></tr>
<tr> <td colspan=1 rowspan=1 > "Vista (Performance Ver.)" </td><td colspan=1 rowspan=1 > September 4 </td><td colspan=1 rowspan=1 > 3:34 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > "We Don't Stop" </td><td colspan=1 rowspan=1 > We Don't Stop (single) </td><td colspan=1 rowspan=1 > November 8 </td><td colspan=1 rowspan=1 > 3:40 </td><td colspan=1 rowspan=1 > Jo Soo-hyun </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 2013 </td><td colspan=1 rowspan=1 > "I Don't Know" </td><td colspan=1 rowspan=1 > Curious (single) </td><td colspan=1 rowspan=1 > October 31 </td><td colspan=1 rowspan=1 > 3:46 </td><td colspan=1 rowspan=1 > Kim Young-jo, Yoo Jun-seok (Naive Creative Production) </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=2 > 2014 </td><td colspan=1 rowspan=1 > "I Love Korea" </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > June 16 </td><td colspan=1 rowspan=1 > 6:27 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > World Cup cheering song </td></tr>
<tr> <td colspan=1 rowspan=1 > "One More" </td><td colspan=1 rowspan=1 > One More (single) </td><td colspan=1 rowspan=1 > July 1 </td><td colspan=1 rowspan=1 > 3:18 </td><td colspan=1 rowspan=1 > Seong Won-mo, Park Sang-woo (Digital Pedicure) </td><td colspan=1 rowspan=1 > First official release without Cheska </td></tr>
<tr> <td colspan=1 rowspan=1 > 2015 </td><td colspan=1 rowspan=1 > "You're Pitiful" </td><td colspan=1 rowspan=1 > Black Label </td><td colspan=1 rowspan=1 > March 4 </td><td colspan=1 rowspan=1 > 3:57 </td><td colspan=1 rowspan=1 > Lee Gi-baek (Tiger Cave Studio) </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=2 > 2016 </td><td colspan=1 rowspan=1 > "Mirror" </td><td colspan=1 rowspan=1 > A Delicate Sense </td><td colspan=1 rowspan=1 > March 9 </td><td colspan=1 rowspan=1 > 3:59 </td><td colspan=1 rowspan=2 > Hong Won-ki (ZANYBROS) </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > "Apple Pie" </td><td colspan=1 rowspan=1 > Apple Pie (single) </td><td colspan=1 rowspan=1 > May 30 </td><td colspan=1 rowspan=1 > 4:05 </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
When and for which song did Fiestar release their first music video?
Answer:
Fiestar released their first music video for their single, "Vista", on August 31, 2012.