I want to add the unnumbered part title into the headers in memoir, but \thepart command produces only the part number without the title. How would I redefine \thepart command to get the desired result?
\documentclass[11pt]{memoir}
\nouppercaseheads
\makepagestyle{mystyle}
\makeevenhead{mystyle}{}{\textit{Book Title}}{}
\makeoddhead{mystyle}{}{\textit{\thepart}}{}
\makeevenfoot{mystyle}{}{\thepage}{}
\makeoddfoot{mystyle}{}{\thepage}{}
\begin{document}
\pagestyle{mystyle}
\part{Part Title}
\include{Chapter1}
\include{chapter2}
\end{document}