Need help please with last 4 cryptic clues- mtia, :-)

[Beatrice35]

Need to rest weary body- need bed big time. So hoping you guys can help me complete my crossword. Just stuck on 4 remaining rear right corner clues. Mtia :-) Muchas gracias

16) Go mad at failure of footwear(4,4) ?l??/???p
24 ) Trendy river animal(5) ????o
26) Willing student joins a new orchestra(7) g?????n
24) Considerate chum answering outside(5) ????n

[wilmay]

16 flip flop
24 hippo

[Beatrice35]

Wilmay- Fantastico!! Many thanks. :-)

[Beatrice35]

Just worked out that 24) is Human :-)

[octogenarian]

26 Gamelan--------24 Human----24 Hippo

[Beatrice35]

26) Gamelan :-) Worked out the other two all thanks to you Wilmay :-)

[Beatrice35]

Octogenarian- Thanks! Big hugs to Wilmay + Octogenarian :-) Can now go to bed with a smile on my face as x word is completed + can post tomorrow :-)