ossia

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os·si·a

O0139800 (ō-sē′ə)conj. Music Or else. Used as a direction to the performer to designate an alternate section or passage.
[Italian, from o sia, or let it be : o, or (from Latin aut) + sia, third person sing. present subjunctive of essere, to be (from Latin esse; see es- in Indo-European roots).]

ossia

(əʊˈsiːə) nan alternate version or passageconj(in musical direction) or

ossia

or (used when suggesting an easier alternative)