Iam try learn a song called " take five" but its in the key of db and i want it in the key of e

1. Just play everything one semitone higher
Eg/ first note is Db you play E instead
Or
2. write up a transposition table with the relevant key signatures to help you transpose
Eg/ first row has all the notes of the old key (Db) and second row has all the notes of the new key (E)

Walls is easier to memorize

Very true. in today’s age anything is possible.