Four months after the Haiti earthquake, charities working on relief efforts continue to raise money, and some of them may well get some extra attention from musicians on tour this summer.

For instance, at a concert outside of Washington last night, Eddie Vedder, the lead singer of Pearl Jam, told crowd about the work of Sean Penn's group, J/P Haitian Relief Organization. Mr. Vedder told his fans that he needs "a favor" from them and asked concert-goers to visit the Web site of Mr. Penn's charity and make a gift.

Mr. Vedder then delivered a stirring rendition, complete with full crowd sing-along, of one of Pearl Jam's oldest and most beloved songs. Mr. Vedder said he wasn't dedicating all the song's lyrics to Mr. Penn because it is is about an abusive relationship, but he did say the title described the actor aptly: "Better Man."

Tyler Green, an art critic, is challenging the readers of his Modern Art Notes blog to support small-scale arts projects and programs at needy schools throughout the country.

Just as he did last year, Mr. Green is highlighting projects already listed by DonorsChoose.org as needing support. Some of the entries need as little as a few hundred dollars to meet their goals. DonorsChoose.org accepts donations as small as $10, Mr. Green writes.

One project that his readers have already fully supported, at a cost of $303, will provide art supplies to 60 second graders at a school in southern California.

As of today, eight donors have given more than $600 to the projects Mr. Green highlights on this Web page, which is part of the DonorsChoose.org site.

In January, Mr. Green says he will list the donors who have given to the projects he highlights this month.

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