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:
Nektar
Table title:
Singles
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Title </th><th colspan=1 rowspan=1 > Billboard Hot 100 </th><th colspan=1 rowspan=1 > U.S Mainstream Rock </th><th colspan=1 rowspan=1 > UK Top 100 </th><th colspan=1 rowspan=1 > Album </th></tr>
<tr> <td colspan=1 rowspan=1 > 1973 </td><td colspan=1 rowspan=1 > "Do You Believe in Magic?" </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=2 > ...Sounds Like This </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=4 > 1974 </td><td colspan=1 rowspan=1 > "What Ya Gonna Do?" </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > "Remember the Future (Edit)" </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Remember the Future </td></tr>
<tr> <td colspan=1 rowspan=1 > "Fidgety Queen'" </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td class="highlighted"  colspan=1 rowspan=2 > Down to Earth </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > "Astral Man" </td><td colspan=1 rowspan=1 > 91 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1975 </td><td colspan=1 rowspan=1 > "Flight to Reality" </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Recycled </td></tr>
<tr> <td colspan=1 rowspan=1 > 2005 </td><td colspan=1 rowspan=1 > "Always" </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Evolution </td></tr>
</table>
Question:
What album was "Astral Man" featured on?
Answer:
In 1974, Nektar did "Astral Man" single of Down to Earth.