Struggling with this one...5d fellow traveller, perhaps, abandoned one on way (7) L---IST (leftist??). 6d Eminent Quaker, we hear, supported by another chummy writer (9) P---R-E-D. 15d Piano piece it's essential to get into (8) -E-B-A-- 19d something easy for person whose charges are small? (6) -I---R