1. A speech synthesis method, comprising: using at least one computer hardware processor to perform: obtaining input comprising text and an identification of a desired speaking style to use in synthesizing the text as speech; identifying a plurality of speech segments for use in synthesizing the text as speech, the identifying comprising: identifying a first speech segment recorded and/or synthesized in a first speaking style based at least in part on a measure of similarity between the desired speaking style and the first speaking style; and identifying a second speech segment recorded and/or synthesized in a second speaking style different from the first speaking style based at least in part on a measure of similarity between the desired speaking style and the second speaking style; synthesizing speech from the text in the desired speaking style, at least in part, by using the first speech segment and the second speech segment; and outputting the synthesized speech via at least one physical device.