I've been soloing with my 71 bard in a few spots with varying results... one of the best places I've found is the gnolls in the Steppes. I like to kite them near the tunnel in between the northern gnolls and giants, just outside that tunnel on the east side (side closest to the gnolls). They drop a LOT of gems, a decent amount of steppes ore (used in TSes and sells for a good amount) and from what I hear some RK. II spells (although I haven't gotten any myself yet). They're all lb or db to me.
Another place I've been soloing is the basilisks in basilisk valley in Sunderrock Springs. I'll kite them right there by the zone in. The highland basilisks are purely melee and pretty easy. The other basilisks that are actually in the valley are a bit tougher. The overseers and stoneseers are casters and will try to root you a lot, as well as buff the other ones around them. They're pretty good experience though and have a good chance of dropping basilisk scales (used in TS charms, sell for 1800-2000pp in the bazaar on Povar).
I've found a few other small places here and there, but they usually have some somewhat major flaw, at least for bard chant kiting.