楼主所问的Solo应该是特指(Guitar Solo 既吉他独奏)吧,根据维基百科的解释：
Guitar solos are a melodic passage, section, or entire piece of music written for an electric guitar or an acoustic guitar. Guitar solos, which often contain varying degrees of improvisation, are used in many styles of popular music such as blues, rock, metal and jazz styles such as swing and jazz fusion. Guitar solos are also used in classical music forms such as chamber music and concertos
翻译成中文既是：吉他独奏是为电吉他或原声吉他而写作的一段旋律或一段完整的音乐。吉他独奏经常在不同风格的音乐中带有不同程度的即兴演奏。比如蓝调、摇滚、金属 或不同风格的爵士乐如Swing或fusion. 吉他独奏也用于古典音乐曲式中如室内乐或协奏曲。
Bass有很多解释
多声部中的低音部叫做Bass
Bass也是一种乐器 既 低音吉他 Electric Bass就是电子低音吉他
男低音也叫Bass
在古典弦乐器中 低音提琴叫做 Double Bass
