In Fig. , we present the signal decomposition of for the case of g c = 500 cm -1 and Γ = 10 meV with the aim of providing an intuitive understanding of the origin of different peaks in Fig. . These pathways can be classified as ground state bleaching (GSB), stimulated emission (SE), and excited state absorption (ES), each with rephasing and non-rephasing contributions. The contribution for each term is provided in Eq. 5 and the discussion below. The Feynman diagrams for these Liouville pathways are provided in Fig. of the Supporting Information. In Fig. , we only present the signal from GSB (panels a-c) and SE (panels d-f). The excited state absorption (ES) signals are much weaker compared to GSB and SE, and do not make a significant contribution to the totally ab- sorptive signal. The ES results are provided in Fig. of the Supporting Information.