Under Construction
See also alexa setup and configuration
and  Echo Show smart display

"Alexa, play some music."
Queue specific song or artist: "Alexa, play music by [artist]."
Play a song based on context: "Alexa, play the latest Avett Brothers album" or,
 "Alexa, play that song that goes 'Gotta gotta be down, because I want it all.'"
Play Spotify music: "Alexa, play [playlist] on Spotify."
Play Pandora station: "Alexa, play [artist] station on Pandora."

Amazon finally lets Echo play Spotify or Pandora by default | engadget
Music on Alexa
Basic Amazon - Can play by genre or artist but not specific songs
Amazon Prime $99/year * 2 million songs See   
Amazon Music Unlimited $10/mo ($8/mo with Prime) 10's of million songs
Pandora - Can play with a free account
Spotify - Requires premium Account
Some third-party music providers (like TuneIn, and iHeartRadio)
See Streaming Music
* Amazon Prime also gives you free 2 day shipping and some movies and TV see
Amazon.com Help: Play Music on Multiple Echo Devices

http://www.cnet.com/how-to/the-complete-list-of-alexa-commands Others: Select the menu on the Alexa App Select Things to Try Lists: Alexa "Add [item] to my Shopping List." Alexa "Put [task] on my To-do List." Alexa, add 'Car payment' every 4th of the month to my to-do list. Alexa, "What's on my Shopping List?" Lists are on the Alexa App under the menu Alexa Lists are on the amazon web site and available from the alexa app. See If This Then That below for an applet to merge alexa todo list with the todolist app Alexa, Ask All Recipes what can I make with chicken, bacon and cheddar cheese? Alexa, Ask Allrecipes to find me the recipe for (all recipes.com) Alexa, Ask Mastermind to send message (MasterMind [android]) Ask mastermind to make phonemail News weather "Alexa, what's my Flash Briefing?" (set up flash briefing in the alexa app. Eg. read NPR news) Check headlines: "Alexa, what's in the news?" Alexa, Control a WeMo switch with Alexa http://www.online-tech-tips.com/gadgets/control-wemo-insight-switch-using-alexa-echo/
You can enhance the basic features with things like:
Skills basically apps for alexa.
If This Then That" (IFTTT)
See alexa setup and configuration
The complete list of Alexa commands so far - CNET
How to craft your own custom voice commands for Amazon Echo's Alexa - CNET
IFTTT adds a channel for Amazon Echo - CNET
Dave's Notes

last updated 27 Nov 2017