Population synthesis a canonical star group of 10⁴ M_⊙ including binary effects. Shown is the impact of ²⁶Al binary wind yields from Brinkman et al. (2019, B+19). Binary systems are included with orbital periods between 3 and 100 days and with an overall fraction of 70% (dashed line) and 90% (dotted line), which is contrasted with an association of only single stars (solid line). Binaries with longer periods, i.e. wider separations are considered to evolve as single stars. Lines indicate the average of 1000 Monte Carlo runs each.