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:
Compact Disco
Table title:
Guests and Session Musicians
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Name </th><th colspan=1 rowspan=1 > Instrument </th><th colspan=1 rowspan=1 > Period </th></tr>
<tr> <td colspan=1 rowspan=1 > Attila Sándor </td><td colspan=1 rowspan=1 > bass </td><td colspan=1 rowspan=1 > 2010 </td></tr>
<tr> <td colspan=1 rowspan=1 > Péter Somos </td><td colspan=1 rowspan=1 > drums </td><td colspan=1 rowspan=1 > 2010 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Helga Wéber </td><td class="highlighted"  colspan=1 rowspan=1 > backing vocals </td><td class="highlighted"  colspan=1 rowspan=1 > 2012 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Krisztián Szakos </td><td colspan=1 rowspan=1 > guitars </td><td class="highlighted"  colspan=1 rowspan=1 > 2012 - 2013 </td></tr>
<tr> <td colspan=1 rowspan=1 > Emese Török </td><td colspan=1 rowspan=1 > drums </td><td colspan=1 rowspan=1 > 2012–present </td></tr>
<tr> <td colspan=1 rowspan=1 > András Áldott </td><td colspan=1 rowspan=1 > bass </td><td colspan=1 rowspan=1 > 2012 </td></tr>
<tr> <td colspan=1 rowspan=1 > Krisztina Lahucsky </td><td colspan=1 rowspan=1 > guitars </td><td colspan=1 rowspan=1 > 2013–present </td></tr>
</table>
Question:
What musicians were guests at Compact Disco in 2012?
Answer:
Compact Disco invited guest musicians Krisztián Szakos and Helga Wéber for backing vocals in 2012.