Parametric T1 and T2 mapping can provide valuable insight into myocardial tissue microstructure. T1ρ is a complimentary technique that is sensitive to macromolecular content and may potentially enable non-contrast scar visualization. Characterization with all parameters is desirable as they may have different sensitivities to pathology but is time consuming with separate acquisitions for each. We propose a novel mSASHA sequence with T1, T2, and T1ρ maps in a single 13 HB breath-hold or free-breathing acquisition. mSASHA had superior T1 and T2 accuracy and similar precision to conventional MOLLI and T2p-bSSFP in phantoms and data is presented from 3 volunteers.