Some slightly funny, and some slightly bananas clues in this one.
Remember to scroll down to start :)
I apologise in advance if you haven't seen the type of wordplay in one of the clues before.
1A1ABananas sherbet wanting alien bananas? (5) [-----] Def bananas? Wordplay Sherbet - ET (alien) anagramed
5A5AA lifetime of endless lager (3) [---] Def A lifetime Wordplay Remove edges from lager
6A6ASound from piano is empowering (5) [-----] Def Sound Wordplay A hidden (from)
8A8ARent directionless, revolutionary pages? (3) [---] Def Rent Wordplay Remove 'E' and 'S' (directions) from pages, and reverse
9A9AMelodies' key after working onboard ship (5)[-----] Def Melodies Wordplay SS (ship) around G 'key' and ON 'working', but G is AFTER on
1D1DPasses high school? (5)[-----] Def Passes Wordplay I believe this is called a reverse engineered clue, the answer is wordplay to the fodder in the definition. Here highschool is 'hs', and H and S (Hands) is the answer
2D2DI set off after ecstasy (3)[---] Def 'I', as in self Wordplay Go (set off) after E (ecstasy)
3D3DAnnounced downfall of monarch's rule (5)[-----] Def Monarch's rule Wordplay Homophone of rain (a downfall of water)
4D4DMeasures treads (5)[-----] Def Measures Wordplay Double-definition with treads
5D Def Drop Wordplay Anagram of gas