one-man band

musician, usu in the street, playing two or three instruments at the same time 单人乐队（通常在街上一人同时演奏两三种乐器者）: (fig 比喻) I run the business as a one-man band just me and no one else. 我是单干户--只有我一人, 没有别人.

once (and )for all, once a month, once and for all, once for all, once in a while, once more, once upon a time, oncologist, oncoming, one, one after another, one another, one day, one p (also 1p), one's bread is buttered, one's opposite number, one-, one-armed bandit, one-horse, one-liner, one-man show, one-night stand, one-off, one-sided, one-sidedly, one-sidedness, one-time, one-to-one, one-track mind, one-upmanship, one-way, onerous, oneself, ongoing, onion, online, onlooker, only, only that, only too,