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:
The Warren Brothers
Table title:
Albums
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=2 > Title </th><th colspan=1 rowspan=2 > Album details </th><th colspan=2 rowspan=1 > Peak chart positions </th></tr>
<tr> <th colspan=1 rowspan=1 > US Country </th><th colspan=1 rowspan=1 > US Heat </th></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Beautiful Day in the Cold Cruel World </th><td class="highlighted"  colspan=1 rowspan=1 > Release date: October 27, 1998 Label: BNA Records </td><td colspan=1 rowspan=1 > 73 </td><td colspan=1 rowspan=1 > — </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > King of Nothing </th><td class="highlighted"  colspan=1 rowspan=1 > Release date: September 12, 2000 Label: BNA Records </td><td colspan=1 rowspan=1 > 34 </td><td colspan=1 rowspan=1 > 43 </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Well Deserved Obscurity </th><td class="highlighted"  colspan=1 rowspan=1 > Release date: April 6, 2004 Label: Sig/429 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td></tr>
<tr> <th colspan=1 rowspan=1 > Barely Famous Hits </th><td colspan=1 rowspan=1 > Release date: August 2, 2005 Label: BNA Records </td><td colspan=1 rowspan=1 > 35 </td><td colspan=1 rowspan=1 > 6 </td></tr>
<tr> <td colspan=4 rowspan=1 > "—" denotes releases that did not chart </td></tr>
</table>
Question:
What were the Warren Brothers doing in 1998, 2000, and 2004?
Answer:
The Warren Brothers have released three studio albums: Beautiful Day in the Cold Cruel World (1998) and King of Nothing (2000) on BNA Records, as well as Well Deserved Obscurity (2004) on Sig/429.