The American Funds Corporate Bond Fund - Class T (TFBBX) is a mutual fund that primarily invests in a diverse portfolio of corporate bonds issued by American companies. This fund aims to provide investors with a steady stream of income through interest payments from the bonds, while also seeking to preserve capital and achieve long-term growth. As a Class T fund, it may have lower fees and expenses compared to other share classes, making it an attractive option for investors looking for a cost-effective way to access the corporate bond market.