Little by little, Jeff Mangum is inching toward being a full-blown working musician again. In addition to the previously announced dates he’s doing in late summer and early fall on the East Coast and in Canada and Europe, Mangum announced five more shows today taking place in four cities (and three churches), which will go up for sale on Wednesday at noon EST. (Click the links below to purchase tickets.) Also, additional tickets for the singer-songwriter’s Sept. 10 Boston show go on sale at noon EST Tuesday. The new dates are listed below.