A guitalele (sometimes spelt guitarlele) is a guitar-ukulele hybrid, that is, "a 1/4 size" guitar, a cross between a classical guitar and a tenor ukulele. The guitalele combines the portability of a ukulele, due to its small size, with the six single strings and resultant chord possibilities of a classical guitar. It may include a built-in microphone that permits playing the guitalele either as an acoustic guitar or connected to an amplifier. The guitalele is variously marketed (and used ) as a travel guitar or children's guitar. In January 1997, Yamaha Corporation came out with the GL-1 Guitalele.