Mark Lennon’s third CD, “Down the Mountain,” finds the terrific LA-based singer-songwriter continuing his musical journey down that Americana trail blazed by the likes of legends such as Ryan Adams, Gene Clark, and Gram Parsons. And like those notable forerunners, Lennon’s ease and naturalness with the country-tinged rock style is as pure as it is noteworthy. With vocal inflections that sound clear-as-mountain-stream authentic, Lennon’s songs of love’s travails and the struggle to find meaning in mixed-up times, really strike home on tunes such as “What I Could Be With You,” “Broken,” and the wonderful “My Hometown,” a track that recalls American Beauty-era Grateful Dead. As accessible and tuneful as all the songs are, though, Lennon’s duet with Simone Stevens on “Wildside” has a fragile beauty that goes beyond questions of style or genre, invoking instead the notion that great music knows no such boundaries. With a multi-textured Americana / Country Rock ensemble providing the perfect backdrop for “Down the Mountain,” Mark Lennon’s latest CD is a triumph of style and delivery.