What zones can a bard reasonably 1v1 solo in using primarily melee?

[Loadsamoney]

Using only melee buff/debuff songs, single target DoT's, healsong etc, and assuming decent gear (full Lambent set, Crystaline Short Sword and Symphonic Saber, Sash of the Dragonborn, 65HP rings) what can a Bard expect to be able to reasonably engage 1 on 1?

Are High Keep Guards or Splitpaw Gnolls an option, for instance? Or Terrors/Geodes/Spiders in CC?

No, I don't want to Swarmkite (though I'm okay to do some Fearkiting in outdoor zones like Great Divide).