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:
Perri "Pebbles" Reid
Table title:
As main performer
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=2 > Year </th><th colspan=1 rowspan=2 > Single </th><th colspan=10 rowspan=1 > Peak chart positions </th><th colspan=1 rowspan=2 > Album </th></tr>
<tr> <th colspan=1 rowspan=1 > US </th><th colspan=1 rowspan=1 > US R&B </th><th colspan=1 rowspan=1 > US Dan </th><th colspan=1 rowspan=1 > US A/C </th><th colspan=1 rowspan=1 > AUS </th><th colspan=1 rowspan=1 > CAN </th><th colspan=1 rowspan=1 > IRE </th><th colspan=1 rowspan=1 > NLD </th><th colspan=1 rowspan=1 > NZ </th><th colspan=1 rowspan=1 > UK </th></tr>
<tr> <td colspan=1 rowspan=2 > 1987 </td><td colspan=1 rowspan=1 > "Love/Hate" </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 34 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=5 > Pebbles </td></tr>
<tr> <td colspan=1 rowspan=1 > "Girlfriend" </td><td colspan=1 rowspan=1 > 5 </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 24 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 86 </td><td colspan=1 rowspan=1 > 17 </td><td colspan=1 rowspan=1 > 9 </td><td colspan=1 rowspan=1 > 23 </td><td colspan=1 rowspan=1 > 22 </td><td colspan=1 rowspan=1 > 8 </td></tr>
<tr> <td colspan=1 rowspan=3 > 1988 </td><td colspan=1 rowspan=1 > "Mercedes Boy" </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 14 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 39 </td><td colspan=1 rowspan=1 > 50 </td><td colspan=1 rowspan=1 > 42 </td></tr>
<tr> <td colspan=1 rowspan=1 > "Take Your Time" </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > 41 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </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 > "Do Me Right" </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 67 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </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=2 > 1990 </td><td colspan=1 rowspan=1 > "Giving You the Benefit" </td><td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 10 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 48 </td><td colspan=1 rowspan=1 > 32 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 32 </td><td colspan=1 rowspan=1 > 26 </td><td colspan=1 rowspan=1 > 73 </td><td colspan=1 rowspan=4 > Always </td></tr>
<tr> <td colspan=1 rowspan=1 > "Love Makes Things Happen" (with Babyface) </td><td colspan=1 rowspan=1 > 13 </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 24 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 91 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > 1991 </td><td colspan=1 rowspan=1 > "Backyard" (with Salt-n-Pepa) </td><td colspan=1 rowspan=1 > 73 </td><td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > "Always" </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 13 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </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 > 1995 </td><td colspan=1 rowspan=1 > "Are You Ready?" </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 38 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > Straight from My Heart </td></tr>
<tr> <td colspan=1 rowspan=2 > 2008 </td><td colspan=1 rowspan=1 > "Let Freedom Reign" </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > Prophetic Flows Vol. I & II </td></tr>
<tr> <td colspan=1 rowspan=1 > "Healing Waters" </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > Non-album single </td></tr>
<tr> <td colspan=16 rowspan=1 > "—" denotes a recording that did not chart or was not released in that territory. </td></tr>
</table>
Question:
What song did Reid release in 1991 without collaborating with any other artists?
Answer:
Reid's solo song "Always" was released in 1991.