原文: Music Connection Magazine April 2015. Fritz Kalkbrenner. Music Connection Magazine April 2015 mUSIC CONNECTION. 62 pages.
译文: 出版哈尔伦纳德. HL.77772151. Music Connection – April 2015 Cover Stories. All Time Low. ÿGuitar Jam 2015. 罗宾·特罗尔. PROCOL HARUM. , Rhonda Smith.
