Sort bibliography with same author and same year (biblatex)

Sort bibliography with same author and same year (biblatex)

When I cite two works by an author published in the same year, biblatex
will sort them in the bibliography according to their title. In some
cases, however, I know that the work sorted in the second place in fact
was published first. How can I reorder them?
\documentclass{article}
\usepackage{filecontents}
\usepackage[style=authoryear]{biblatex}
\begin{filecontents}{\jobname.bib}
@BOOK{lennon1972a,
AUTHOR = "John Lennon",
TITLE = "My music",
YEAR = "1972"}
@BOOK{lennon1972b,
AUTHOR = "John Lennon",
TITLE = "More of my music",
YEAR = "1972"}
\end{filecontents}
\addbibresource{\jobname.bib}
\begin{document}
\cites{lennon1972a}{lennon1972b}
\printbibliography
\end{document}